<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-4298</journal-id>
<journal-title><![CDATA[Botanical Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Bot. sci]]></abbrev-journal-title>
<issn>2007-4298</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Botánica de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-42982016000200199</article-id>
<article-id pub-id-type="doi">10.17129/botsci.270</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Dinámica poblacional de Mammillaria humboldtii una cactácea endémica de Hidalgo, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Population dynamics of Mammillaria humboldtii, an endemic cactus from Hidalgo state, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Ramos]]></surname>
<given-names><![CDATA[Marisol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arroyo-Cosultchi]]></surname>
<given-names><![CDATA[Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mandujano]]></surname>
<given-names><![CDATA[María C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Golubov]]></surname>
<given-names><![CDATA[Jordan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Metropolitana Departamento El Hombre y Su Ambiente Laboratorio de Ecología, Sistemática y Fisiología Vegetal]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ecología Departamento de Ecología de la Biodiversidad]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2016</year>
</pub-date>
<volume>94</volume>
<numero>2</numero>
<fpage>199</fpage>
<lpage>208</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982016000200199&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982016000200199&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982016000200199&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El género Mammillaria es de los más diversificados dentro de la familia Cactaceae, México es su centro de diversificación y los estudios que analicen detalladamente los ciclos de vida de especies pertenecientes a este género son necesarios para determinar el estado de sus poblaciones y planear estrategias de conservación. Mammillaria humboldtii es una especie endémica de Estado de Hidalgo, actualmente se encuentra en la categoría de &#8220;amenazada&#8221; por la NOM-059-SEMARNAT-2010 y en &#8220;peligro crítico&#8221; por la UICN. Se emplearon modelos de proyección matricial para evaluar el estado de conservación de una población de M. humboldtii dentro de la Reserva de la Biosfera Barranca de Metztitlán (2012-2013). Se construyó una matriz de transición para poder calcular la tasa de crecimiento poblacional (&#955;); se simularon los cambios en los elementos de la matriz que corresponden a la permanencia de banco de semillas, transición de semilla a plántula y permanencia de adultos. La tasa de crecimiento poblacional &#955; es de 0.7931 (0.7797 0.8050) indicando que la población decrece un 20 %. El proceso demográfico al que &#955; es más sensible fue la estasis (S = 70.05 %), seguido del crecimiento (G = 15.69 %). El valor reproductivo más alto fue el de la categoría adulto 3, las simulaciones mostraron que al incrementar el establecimiento de plántulas y la permanencia de adultos aumenta el valor de &#955; &gt; 1, estos procesos son los principales cuellos de botella de la dinámica y crecimiento poblacional. Cualquier estrategia de manejo para la conservación de esta especie in situ deberá considerar el monitoreo a largo plazo de la población así como asegurar el establecimiento de plántulas y supervivencia de los adultos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The genus Mammillaria is the most diversified in the Cactaceae. Mexico is center of this diversification, however studies that analyze the life cycles of these species are needed to help in population diagnostics and provide management information for their conservation. Mammillaria humboldtii is an endemic species of Hidalgo, currently listed as &#8220;threatened&#8221; by Mexican legislation (NOM-059-SEMARNAT-2010) and the IUCN lists it as &#8220;critically endangered&#8221;. The study employed matrix projection models to evaluate a population of M. humboldtii within the Metztitlán Canyon Biosphere Reserve. A one year transition matrix was constructed from which the finite population growth rate (&#955;) was determined. Changes in matrix elements corresponding to the permanence in the seed bank, transition from seed to seedling and adult stasis were simulated. The population growth rate was below unity (&#955; = 0.7931, CI = 0.7797-0.8050) indicating a decreasing population over time. Stasis (S = 70.05 %) was the process that contributed the most towards &#955;, followed by growth (G = 15.69 %). The highest reproductive value was for those adults in size class 3, and the simulations showed that increasing seedling establishment and survival of adults increased the value of &#955; &gt; 1, suggesting these processes as the main bottlenecks in the dynamics and population growth. Any management strategy for the in situ conservation of this species should consider long term monitoring of the population to ensure seedling establishment and survival or adults.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cactaceae]]></kwd>
<kwd lng="es"><![CDATA[conservación]]></kwd>
<kwd lng="es"><![CDATA[riego de extinción]]></kwd>
<kwd lng="es"><![CDATA[simulaciones numéricas]]></kwd>
<kwd lng="es"><![CDATA[modelos matriciales]]></kwd>
<kwd lng="en"><![CDATA[Cactaceae]]></kwd>
<kwd lng="en"><![CDATA[conservation]]></kwd>
<kwd lng="en"><![CDATA[extinction risk]]></kwd>
<kwd lng="en"><![CDATA[matrix models]]></kwd>
<kwd lng="en"><![CDATA[numerical simulations]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Anderson]]></surname>
<given-names><![CDATA[E.F.]]></given-names>
</name>
</person-group>
<source><![CDATA[The Cactus Family]]></source>
<year>2001</year>
<publisher-loc><![CDATA[Portland ]]></publisher-loc>
<publisher-name><![CDATA[Timber Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Avendaño-Calvo]]></surname>
<given-names><![CDATA[T. de J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Dinámica poblacional de Mammillaria supertexta. Mart ex Pfieff, en el Valle de Cuicatlán, Oaxaca, México]]></source>
<year>2007</year>
<publisher-loc><![CDATA[Oaxaca, Oaxaca ]]></publisher-loc>
<publisher-name><![CDATA[Centro Interdisiplinario de Investigación para el Desarrollo Integral Regional, Instituto Politécnico Nacional]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bowers]]></surname>
<given-names><![CDATA[J.E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[New evidence for persistent or transient seed banks in three Sonoran desert Cacti]]></article-title>
<source><![CDATA[The Southwestern Naturalist]]></source>
<year>2005</year>
<volume>50</volume>
<page-range>482-7</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Caswell]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Matrix Population Models: Construction, Analysis, and Interpretation]]></source>
<year>2001</year>
<publisher-loc><![CDATA[Sunderland ]]></publisher-loc>
<publisher-name><![CDATA[Sinauer Associates]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cody]]></surname>
<given-names><![CDATA[M.L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Do cholla cacti (Opuntia spp., Subgenus Cylindropuntia) use or need nurse plants in the Mojave Desert?]]></article-title>
<source><![CDATA[Journal of Arid Environments]]></source>
<year>1993</year>
<volume>24</volume>
<page-range>139-54</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="book">
<collab>CONANP</collab>
<source><![CDATA[Programa de Manejo Reserva de la Biosfera Barranca de Meztitlán]]></source>
<year>2003</year>
<publisher-loc><![CDATA[México D.F ]]></publisher-loc>
<publisher-name><![CDATA[Comisión Nacional de Áreas Naturales Protegidas]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Contreras]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of the conservation status of a rare cactus (Mammillaria crucigera) through the analysis of its population dynamics]]></article-title>
<source><![CDATA[Journal of Arid Environments]]></source>
<year>2002</year>
<volume>51</volume>
<page-range>89-102</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Crone]]></surname>
<given-names><![CDATA[E.E.]]></given-names>
</name>
<name>
<surname><![CDATA[Menges]]></surname>
<given-names><![CDATA[E.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Ellis]]></surname>
<given-names><![CDATA[M.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bell]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Bierzychudek]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Ehrlén]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Kaye]]></surname>
<given-names><![CDATA[T.N.]]></given-names>
</name>
<name>
<surname><![CDATA[Knight]]></surname>
<given-names><![CDATA[T.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Lesica]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Morris]]></surname>
<given-names><![CDATA[W.F.]]></given-names>
</name>
<name>
<surname><![CDATA[Oostermeijer]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Quintana-Ascencio]]></surname>
<given-names><![CDATA[P.F.]]></given-names>
</name>
<name>
<surname><![CDATA[Stanley]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ticktin]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[T .]]></given-names>
</name>
<name>
<surname><![CDATA[Williams]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[How do plant ecologists use matrix population models?]]></article-title>
<source><![CDATA[Ecology Letters]]></source>
<year>2011</year>
<volume>14</volume>
<page-range>1-8</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[de Kroon]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Plaisier]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[van Groenendael]]></surname>
<given-names><![CDATA[J..]]></given-names>
</name>
<name>
<surname><![CDATA[Caswell]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Elasticity: the relative contribution of demographic parameters to population growth rate]]></article-title>
<source><![CDATA[Ecology]]></source>
<year>1986</year>
<volume>67</volume>
<page-range>1427-31</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Esparza-Olguín]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Vilchis-Anaya]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Demographic analysis of a rare columnar cactus (Neobuxbaumia macrocephala) in the Tehuacan Valley, Mexico]]></article-title>
<source><![CDATA[Biological Conservation]]></source>
<year>2002</year>
<volume>103</volume>
<page-range>349-59</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Everitt]]></surname>
<given-names><![CDATA[B.S.]]></given-names>
</name>
</person-group>
<source><![CDATA[The analysis of contingency tables]]></source>
<year>1977</year>
<publisher-loc><![CDATA[Nueva York ]]></publisher-loc>
<publisher-name><![CDATA[Chapman &amp; Hall]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ferrer]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Durán]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Méndez]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Dorantes]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Dzib]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Dinámica poblacional de genets y ramets de Mammillaria gaumeri cactácea endémica de Yucatán]]></article-title>
<source><![CDATA[Boletín de la Sociedad Botánica de México]]></source>
<year>2011</year>
<volume>89</volume>
<page-range>83-105</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Flores-Martínez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Manzanero-Medina]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Golubov]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Montaña]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Mandujano]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Demography of an endangered endemic rupicolous cactus]]></article-title>
<source><![CDATA[Plant Ecology]]></source>
<year>2010</year>
<volume>210</volume>
<page-range>53-66</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Godínez-Álvarez]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Ortega-Baes]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Demographic trends in the Cactaceae]]></article-title>
<source><![CDATA[Botanical Review]]></source>
<year>2003</year>
<volume>69</volume>
<page-range>173-201</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gorelick]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evolution of cacti is largely driven by genetic drift, not selection]]></article-title>
<source><![CDATA[Bradleya]]></source>
<year>2009</year>
<volume>27</volume>
<page-range>37-48</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Guzmán]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
<name>
<surname><![CDATA[Arias]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Dávila]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<source><![CDATA[Catálogo de Cactáceas Mexicanas]]></source>
<year>2003</year>
<publisher-loc><![CDATA[México D.F ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hernández-Oria]]></surname>
<given-names><![CDATA[J.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Chávez-Martínez]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Galindo-Sotelo]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Martínez]]></surname>
<given-names><![CDATA[M.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Lagunas-Solís]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez-Romero]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendoza-Aguilar]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez-Hernández]]></surname>
<given-names><![CDATA[J.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez-Martínez]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación de aspectos ecológicos de una nueva población de Mammillaria mathildae Kraehenbuehl y Krainz en Querétaro]]></article-title>
<source><![CDATA[Cactáceas y Suculentas Mexicanas]]></source>
<year>2003</year>
<volume>48</volume>
<page-range>100-110.</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Holland]]></surname>
<given-names><![CDATA[J.N.]]></given-names>
</name>
<name>
<surname><![CDATA[Molina-Freaner]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hierarchical effects of rainfall, nurse, plants, granivory and seed banks on cactus recruitment]]></article-title>
<source><![CDATA[Journal of Vegetation Science]]></source>
<year>2013</year>
<volume>24</volume>
<page-range>1053-61</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jordan]]></surname>
<given-names><![CDATA[P.W.]]></given-names>
</name>
<name>
<surname><![CDATA[Nobel]]></surname>
<given-names><![CDATA[P.S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Seedling establishment of Ferocactus acanthodes in relation to drought]]></article-title>
<source><![CDATA[Ecology]]></source>
<year>1981</year>
<volume>62</volume>
<page-range>901-6</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jurado]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Flores]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Muro-Pérez]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[González-Rodríguez]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Pando-Moreno]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Doria]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Are nurse plants always necessary for succulent plants? Observations in northeastern Mexico, including endangered and threatened species]]></article-title>
<source><![CDATA[Bradleya]]></source>
<year>2013</year>
<volume>31</volume>
<page-range>150-6</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Krebs]]></surname>
<given-names><![CDATA[C.J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ecological methodology]]></source>
<year>1999</year>
<publisher-loc><![CDATA[Inc., Menlo Park ]]></publisher-loc>
<publisher-name><![CDATA[Addison-wesley Educational Publichers]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lacoste]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[FIELD-LIST]]></source>
<year>2014</year>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mandujano]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Golubov]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Montaña]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Dormancy and endozoochorous dispersal of Opuntia rastrera seeds in the southern Chihuahuan Desert]]></article-title>
<source><![CDATA[Journal of Arid Environments]]></source>
<year>1997</year>
<volume>36</volume>
<page-range>259-66</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mandujano]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Verhulst]]></surname>
<given-names><![CDATA[J.A.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Carrillo-Angeles]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Golubov]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Population dynamics of Ariocarpus scaphirostris Bödeker (Cactaceae): evaluating the status of a threatened species]]></article-title>
<source><![CDATA[International Journal of Plant Sciences]]></source>
<year>2007</year>
<volume>168</volume>
<page-range>1035-44</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martínez-Peralta]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Mandujano]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Saqueo en poblaciones naturales de Ariocarpus: el caso de A. agavoides]]></article-title>
<source><![CDATA[Cactáceas y Suculentas Mexicanas]]></source>
<year>2009</year>
<volume>54</volume>
<page-range>60-2</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martínez-Peralta]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Molina-Freaner]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Golubov]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Vázquez-Lobo]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Mandujano]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A comparative study of the reproductive traits and morphology of a genus of geophytic cacti]]></article-title>
<source><![CDATA[International Journal of Plant Sciences]]></source>
<year>2014</year>
<volume>175</volume>
<page-range>663-80</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martorell]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Peters]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The measurement of chronic disturbance and its effect on the threatened cactus Mammillaria pectinifera]]></article-title>
<source><![CDATA[Biological. Conservation]]></source>
<year>2005</year>
<volume>124</volume>
<page-range>199-207</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McCarthy]]></surname>
<given-names><![CDATA[M.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Keith]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Tietjen]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Burgman]]></surname>
<given-names><![CDATA[M.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Maunder]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Master]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Brook]]></surname>
<given-names><![CDATA[B.W.]]></given-names>
</name>
<name>
<surname><![CDATA[Mace]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Possingham]]></surname>
<given-names><![CDATA[H.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Medellin]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Andelman]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Regan]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruckelshaus]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparing predictions of extinction risk using models and subjective judgement]]></article-title>
<source><![CDATA[Acta Oecologica]]></source>
<year>2004</year>
<volume>26</volume>
<page-range>67-74</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Morris]]></surname>
<given-names><![CDATA[W.F.]]></given-names>
</name>
<name>
<surname><![CDATA[Doak]]></surname>
<given-names><![CDATA[D.F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Quantitative Conservation biology. Theory and Practice of Population Viability Analyses]]></source>
<year>2002</year>
<publisher-loc><![CDATA[Sunderland ]]></publisher-loc>
<publisher-name><![CDATA[Sinauer Associates]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nobel]]></surname>
<given-names><![CDATA[P.S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Morphology, nurse plants, and minimum apical temperatures for young Carnegiea gigantea]]></article-title>
<source><![CDATA[Botanical Gazette]]></source>
<year>1980</year>
<volume>141</volume>
<page-range>188-91</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pearson]]></surname>
<given-names><![CDATA[T.R.H.]]></given-names>
</name>
<name>
<surname><![CDATA[Burslem]]></surname>
<given-names><![CDATA[D.F.R.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Mullins]]></surname>
<given-names><![CDATA[C.E.]]></given-names>
</name>
<name>
<surname><![CDATA[Dalling]]></surname>
<given-names><![CDATA[J.W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Functional significance of photoblastic germination in Neotropical pioneer trees: a seed&#8217;s eye view]]></article-title>
<source><![CDATA[Functional Ecology]]></source>
<year>2003</year>
<volume>17</volume>
<page-range>394-402</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peters]]></surname>
<given-names><![CDATA[E.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Martorell]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Ezcurra]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effects of serotiny and rainfall-cued dispersal on fitness: bet-hedging in the threatened cactus Mammillaria pectinifera]]></article-title>
<source><![CDATA[Population Ecology]]></source>
<year>2011</year>
<volume>53</volume>
<page-range>383-92</page-range></nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pilbeam]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Mammillaria: the cactus file handbook]]></source>
<year>1999</year>
<publisher-loc><![CDATA[Oxford ]]></publisher-loc>
<publisher-name><![CDATA[Cirio Publishing Services]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="book">
<collab>R Development Core Team</collab>
<source><![CDATA[R: A language and environment for statistical computing]]></source>
<year>2014</year>
<publisher-loc><![CDATA[Vienna ]]></publisher-loc>
<publisher-name><![CDATA[R Foundation for Statistical Computing]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ramos-López]]></surname>
<given-names><![CDATA[A.L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Estudio poblacional de Mamillaria dixanthocentron Backeb. ex Mottram en el valle de Cucatlán, Oaxaca]]></source>
<year>2007</year>
<publisher-loc><![CDATA[Oaxaca, Oaxaca ]]></publisher-loc>
<publisher-name><![CDATA[Ciencias. Centro Interdisiplinario de Investigación para el Desarrollo Integral Regional, Instituto Politécnico Nacional]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodríguez-Ortega]]></surname>
<given-names><![CDATA[C.E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Consecuencias demográficas y evolutivas del secuestro de semillas en tres especies del género Mammillaria (Cactaceae)]]></source>
<year>2008</year>
<publisher-loc><![CDATA[D.F ]]></publisher-loc>
<publisher-name><![CDATA[Ciencias. Instituto de Ecología, Universidad Nacional Autónoma de México]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rojas-Aréchiga]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Mandujano]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Golubov]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Seed size and photoblastism in species belonging to tribe Cacteae (Cactaceae)]]></article-title>
<source><![CDATA[Journal of Plant Research]]></source>
<year>2013</year>
<volume>126</volume>
<page-range>373-86</page-range></nlm-citation>
</ref>
<ref id="B38">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salguero-Gómez]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Siewert]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Casper]]></surname>
<given-names><![CDATA[B.B.]]></given-names>
</name>
<name>
<surname><![CDATA[Tielbörger]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A demographic approach to study effects of climate change in desert plants]]></article-title>
<source><![CDATA[Philosophical Transactions of the Royal. Society B]]></source>
<year>2012</year>
<volume>367</volume>
<page-range>3100-14</page-range></nlm-citation>
</ref>
<ref id="B39">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sánchez-Mejorada]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Manual de Campo de las Cactáceas y Suculentas de la Barranca de Metztitlán]]></source>
<year>1978</year>
<publisher-loc><![CDATA[México D.F ]]></publisher-loc>
<publisher-name><![CDATA[Sociedad Mexicana de Cactología]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B40">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Saldivar-Sánchez]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Navarro-Carvajal]]></surname>
<given-names><![CDATA[M. C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estudio demográfico de Mammillaria mystax en Cañada Morelos, Puebla, México]]></article-title>
<source><![CDATA[Cactaceas y Suculentas Mexicanas]]></source>
<year>2012</year>
<volume>57</volume>
<page-range>47-63</page-range></nlm-citation>
</ref>
<ref id="B41">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Silvertown]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Franco]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pisanty]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendoza]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparative plant demography: relative importance of demographic components to the finite rate of increase in perennial plants]]></article-title>
<source><![CDATA[Journal of Ecology]]></source>
<year>1993</year>
<volume>81</volume>
<page-range>465-76</page-range></nlm-citation>
</ref>
<ref id="B42">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Steenbergh]]></surname>
<given-names><![CDATA[W.F]]></given-names>
</name>
<name>
<surname><![CDATA[Lowe]]></surname>
<given-names><![CDATA[C.H]]></given-names>
</name>
</person-group>
<source><![CDATA[Ecology of the Saguaro: II. Reproduction, Germination, Establishment, Growth, and Survival of the Young Plant]]></source>
<year>1977</year>
<publisher-loc><![CDATA[Washington D.C. ]]></publisher-loc>
<publisher-name><![CDATA[Deparment of the Interior]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B43">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stubben]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Milligan]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estimating and analyzing demographic models using the popbio package in R]]></article-title>
<source><![CDATA[Journal of Statistical Software]]></source>
<year>2007</year>
<volume>22</volume>
<page-range>1-22</page-range></nlm-citation>
</ref>
<ref id="B44">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Suzán]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Nabhan]]></surname>
<given-names><![CDATA[G.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Patten]]></surname>
<given-names><![CDATA[D.T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The importance of Olneya tesota as a nurse plant in the Sonoran Desert]]></article-title>
<source><![CDATA[Journal of Vegetation Science]]></source>
<year>1996</year>
<volume>7</volume>
<page-range>635-44</page-range></nlm-citation>
</ref>
<ref id="B45">
<nlm-citation citation-type="journal">
<collab>SEMARNAT</collab>
<article-title xml:lang=""><![CDATA[Norma Oficial Mexicana NOM-059-SEMARNAT-2010, Protección ambiental - Especies nativas de México de flora y fauna silvestres - Categorías de riesgo y especificaciones para su inclusión, exclusión o cambio - Lista de especies en riesgo]]></article-title>
<source><![CDATA[Diario Oficial de la Federación]]></source>
<year>2010</year>
</nlm-citation>
</ref>
<ref id="B46">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Turner]]></surname>
<given-names><![CDATA[R.M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Long-term vegetation change at a fully protected Sonoran Desert site]]></article-title>
<source><![CDATA[Ecology]]></source>
<year>1990</year>
<volume>71</volume>
<page-range>464-77</page-range></nlm-citation>
</ref>
<ref id="B47">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Turner]]></surname>
<given-names><![CDATA[R.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Alcom]]></surname>
<given-names><![CDATA[S.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Olin]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Booth]]></surname>
<given-names><![CDATA[J.A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The influence of shade, soil, and water on saguaro seedling establishment]]></article-title>
<source><![CDATA[Botanical Gazette]]></source>
<year>1966</year>
<volume>127</volume>
<page-range>95-102</page-range></nlm-citation>
</ref>
<ref id="B48">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fitz Murice]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Fitz Maurice]]></surname>
<given-names><![CDATA[W.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[H.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Sotomayor]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Mammillaria humboldtii. The IUCN Red List of Threatened Species 2013: e. T152892A691543]]></source>
<year>2013</year>
</nlm-citation>
</ref>
<ref id="B49">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ureta]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Martorell]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Identifying the impacts of chronic anthropogenic disturbance on two threatened cacti to provide guidelines for population-dynamics restoration]]></article-title>
<source><![CDATA[Biological Conservation]]></source>
<year>2009</year>
<volume>142</volume>
<page-range>1992-2001</page-range></nlm-citation>
</ref>
<ref id="B50">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Valiente-Banuet]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ezcurra]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Shade as a cause of the association between the cactus Neobuxbaumia tetetzo and the nurse plant Mimosa luisana in the Tehuacan Valley, Mexico]]></article-title>
<source><![CDATA[Journal of Ecology]]></source>
<year>1991</year>
<volume>79</volume>
<page-range>961-71</page-range></nlm-citation>
</ref>
<ref id="B51">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[P.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Zavala-Hurtado]]></surname>
<given-names><![CDATA[J.A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Assessing the ecological status of Mammillaria pectinifera Weber (Cactaceae), a rare and threatened species endemic of the Tehuacán-Cuicatlán Region in Central Mexico]]></article-title>
<source><![CDATA[Journal of Arid Environments]]></source>
<year>2006</year>
<volume>64</volume>
<page-range>193-208</page-range></nlm-citation>
</ref>
<ref id="B52">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Quijas]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Villavicencio]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Castillo]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Population dynamics of Mammillaria magnimamma Haworth. (Cactaceae) in a lava-field in central Mexico]]></article-title>
<source><![CDATA[Plant Ecology]]></source>
<year>2004</year>
<volume>170</volume>
<page-range>167-84</page-range></nlm-citation>
</ref>
<ref id="B53">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zepeda-Martínez]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Mandujano]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Mandujano]]></surname>
<given-names><![CDATA[F.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Golubov]]></surname>
<given-names><![CDATA[J.K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[What can the demography of Atrophytum ornatum tell us of its endangered status?]]></article-title>
<source><![CDATA[Journal of Arid Environments]]></source>
<year>2013</year>
<volume>88</volume>
<page-range>244-9</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
