<?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>2007-0705</journal-id>
<journal-title><![CDATA[Nova scientia]]></journal-title>
<abbrev-journal-title><![CDATA[Nova scientia]]></abbrev-journal-title>
<issn>2007-0705</issn>
<publisher>
<publisher-name><![CDATA[Universidad de La Salle Bajío A. C., Coordinación de Investigación]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-07052017000100076</article-id>
<article-id pub-id-type="doi">10.21640/ns.v9i18.750</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis de la evaporación y cambio climático en el centro de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaporation analysis and climate change in central México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Magallanes-Quintanar]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Hernández]]></surname>
<given-names><![CDATA[Aurelio Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Galván-Tejada]]></surname>
<given-names><![CDATA[Carlos Erick]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Zacatecas Unidad Académica de Ingeniería Eléctrica ]]></institution>
<addr-line><![CDATA[ Zacatecas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Zacatecas Unidad Académica de Ingeniería Eléctrica ]]></institution>
<addr-line><![CDATA[ Zacatecas]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<volume>9</volume>
<numero>18</numero>
<fpage>76</fpage>
<lpage>93</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-07052017000100076&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-07052017000100076&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-07052017000100076&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se analizaron mediante regresión lineal series de largo plazo de evaporación en 35 estaciones localizadas en el estado de Zacatecas, México, con el objetivo de identificar sus tendencias y calcular sus anomalías. Adicionalmente, se analizaron mediante análisis fractal los espectros de potencia de las anomalías de evaporación con el fin de identificar sus frecuencias importantes y su posible conexión con fenómenos periódicos. Los resultados sugieren que las tendencias negativas en las series de tiempo de evaporación prevalecen sobre las tendencias positivas. Se encontró tendencia lineal negativa en 21 de 35 series; 18 de las 21 series fueron significativas a p &lt;0.05. Por otra parte, 14 series tuvieron tendencias lineales positivas, pero solo 8 fueron significativas a p&lt;0.05. El ruido en todas las series de tiempo de evaporación mensual tiene un comportamiento persistente. Adicionalmente, se encontró que las frecuencias importantes detectadas pueden estar relacionadas con el ciclo anual, el ciclo cuasi-bianual, el fenómeno &#8220;El Niño Oscilación del Sur&#8221; y el ciclo de manchas solares.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Long-term monthly pan evaporation time series registered at 35 meteorological stations located within Mexico&#8217;s state of Zacatecas were analyzed through linear regression approach in order to identify their trends and to calculate their anomalies. In addition, we analyzed the power spectrum signals of evaporation anomaly series through fractal analysis to identify their important frequencies and its possible connection with periodic phenomena. Results suggest that negative trends are prevailing over positive trends. We found negative linear trend for 21 out of 35 pan evaporation time series. 18 out of 21 decreasing trends were significant at p&lt;0.05. On the other hand, 14 out of 35 pan evaporation trends were positive but only 8 of them at significant level (p&lt;0.05). Moreover, the noise in these monthly pan evaporation series tends to be persistent behavior. Additionally, we found that important frequencies in our study seem that could be related with the yearly cycle, quasi-biannual cycle, &#8216;El Niño Southern Oscillation&#8217; phenomena and sunspot cycle.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[tendencias lineales]]></kwd>
<kwd lng="es"><![CDATA[dimensión fractal]]></kwd>
<kwd lng="es"><![CDATA[dimensión de espectro de potencias]]></kwd>
<kwd lng="es"><![CDATA[ENOS]]></kwd>
<kwd lng="es"><![CDATA[manchas solares]]></kwd>
<kwd lng="en"><![CDATA[linear trends]]></kwd>
<kwd lng="en"><![CDATA[fractal dimensión]]></kwd>
<kwd lng="en"><![CDATA[power spectrum density]]></kwd>
<kwd lng="en"><![CDATA[ENSO]]></kwd>
<kwd lng="en"><![CDATA[sunspot cycle]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brutsaert]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Parlange]]></surname>
<given-names><![CDATA[M. B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hydrologic cycle explains the evaporation paradox]]></article-title>
<source><![CDATA[Nature]]></source>
<year>1998</year>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brutsaert]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Indications of increasing land surface evaporation during the second half of the 20th century]]></article-title>
<source><![CDATA[Geophys. Res. Lett.]]></source>
<year>2006</year>
<volume>33</volume>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Blanco-Macías]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Valdez-Cepeda]]></surname>
<given-names><![CDATA[R. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Magallanes-Quintanar]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pan evaporation analysis in central Mxico: Trends, self-affinity and important frequencies]]></article-title>
<source><![CDATA[International Journal of Physical Sciences]]></source>
<year>2011</year>
<volume>6</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>540-9</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chattopadhyay]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Hulme]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaporation and potential evapotranspiration in India under conditions of recent and future climate]]></article-title>
<source><![CDATA[Agric. Forest Meteorol.]]></source>
<year>1997</year>
<volume>187</volume>
<page-range>55-73</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[De la Fuente]]></surname>
<given-names><![CDATA[I.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Aguirregabiria]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Veguillas]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Iriarte M]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Long-range correlations in the phase-shifts of numerical simulations of biochemical oscillations in experimental cardiac rhytms]]></article-title>
<source><![CDATA[J. Biol. Systems]]></source>
<year>1999</year>
<volume>7</volume>
<page-range>113-30</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dimri]]></surname>
<given-names><![CDATA[V. P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fractals in geophysics and seismology: an introduction]]></source>
<year>2005</year>
<page-range>1-22</page-range><publisher-name><![CDATA[Springer Berlin Heidelberg]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Evertsz]]></surname>
<given-names><![CDATA[C.J.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Berkner]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Large deviation and self-similarity analysis of curves: DAX stock prices]]></article-title>
<source><![CDATA[Chaos, Solitons &amp; Fractals]]></source>
<year>1995</year>
<volume>6</volume>
<page-range>121-30</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="">
<collab>Gamma Design Software</collab>
<source><![CDATA[GS+ Geostatistics for the Environmental Sciences. (Version 3.5)]]></source>
<year>1999</year>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gifford]]></surname>
<given-names><![CDATA[R.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Graham]]></surname>
<given-names><![CDATA[D. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Neville]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Michael]]></surname>
<given-names><![CDATA[L. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Workshop summary on pan evaporation: An example of the detection and attribution of climate change variables]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Gifford]]></surname>
<given-names><![CDATA[R.M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Pan Evaporation: An Example of the Detection and Attribution of Trends in Climate Variables]]></source>
<year>2005</year>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hausdorff]]></surname>
<given-names><![CDATA[J.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Peng]]></surname>
<given-names><![CDATA[C-K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Multiscaled randomness: A possible source of 1/f noise in biology]]></article-title>
<source><![CDATA[Phys. Rev.]]></source>
<year>1996</year>
<volume>E 54</volume>
<page-range>2154-7</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Huntington]]></surname>
<given-names><![CDATA[T.G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evidence for intensification of the global water cycle: Review and synthesis]]></article-title>
<source><![CDATA[J. Hydrol.]]></source>
<year>2006</year>
<volume>319</volume>
<numero>83-95</numero>
<issue>83-95</issue>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<collab>Intergovernmental Panel on Climate Change (IPCC)</collab>
<source><![CDATA[Climate Change 2014, Synthesis Report]]></source>
<year>2015</year>
<publisher-name><![CDATA[IPCC]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Johnson]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A Comparison of Australian Open Water Body Evaporation Trends for Current and Future Climates Estimated from Class A Evaporation Pans and General Circulation Models]]></article-title>
<source><![CDATA[J. Hidrometeorology]]></source>
<year>2010</year>
<volume>11</volume>
<page-range>105-21</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Labitske]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Loon]]></surname>
<given-names><![CDATA[H. van]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Associations between the 11-year solar cycle, the QBO and the atmosphere. Part I: The troposphere and stratosphere in the northern hemisphere in winter]]></article-title>
<source><![CDATA[J. Atmosph. &amp; Solar-Terr. Phys.]]></source>
<year>1989</year>
<volume>50</volume>
<page-range>197-206</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lawrimore]]></surname>
<given-names><![CDATA[J.H.]]></given-names>
</name>
<name>
<surname><![CDATA[Peterson]]></surname>
<given-names><![CDATA[T. C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pan evaporation trends in dry and humid regions of the United States]]></article-title>
<source><![CDATA[J. Hydrometeor.]]></source>
<year>2000</year>
<volume>1</volume>
<page-range>543-6</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Linacre]]></surname>
<given-names><![CDATA[E.T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaporation trends]]></article-title>
<source><![CDATA[Theor. Appl. Climatol.]]></source>
<year>2004</year>
<volume>79</volume>
<page-range>11-21</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[MacMynowski]]></surname>
<given-names><![CDATA[D.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Tziperman]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Factors affecting ENSO&#8217;s period]]></article-title>
<source><![CDATA[J. of the Atmospheric Sciences]]></source>
<year>2008</year>
<volume>65</volume>
<page-range>1570-86</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mandelbrot]]></surname>
<given-names><![CDATA[B.B.]]></given-names>
</name>
</person-group>
<source><![CDATA[The Fractal Geometry ofNature]]></source>
<year>1982</year>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[W.H. Freeman]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mendoza]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Lara]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Maravilla]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Jáuregui]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Temperature variability in central México and its posible association to solar activiy]]></article-title>
<source><![CDATA[J. Atmosph. and Solar-Terr. Phys.]]></source>
<year>2001</year>
<volume>63</volume>
<page-range>1891-900</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Monetti]]></surname>
<given-names><![CDATA[R.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Havlin]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Bunde]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Long-term persistence in sea-surface temperature fluctuations]]></article-title>
<source><![CDATA[Physica A.]]></source>
<year>2003</year>
<volume>320</volume>
<page-range>581-9</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moreira]]></surname>
<given-names><![CDATA[J.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Kamphorst]]></surname>
<given-names><![CDATA[L. D. S. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Oliffson]]></surname>
<given-names><![CDATA[K. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[On the fractal dimension of self-affine profiles]]></article-title>
<source><![CDATA[J. Phys. A: Math. Gen.]]></source>
<year>1994</year>
<volume>27</volume>
<page-range>80.79-8089</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Muhlbauer]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Spichtinger]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Lohmann]]></surname>
<given-names><![CDATA[P., U.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Application and comparison of robust linear regression methods for trend estimation]]></article-title>
<source><![CDATA[Journal of Applied Meteorology and Climatology]]></source>
<year>2009</year>
<volume>48</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>1961-70</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mutziger]]></surname>
<given-names><![CDATA[A.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Burt]]></surname>
<given-names><![CDATA[C. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Howes]]></surname>
<given-names><![CDATA[D. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Allen]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparison of measured and FAO-56 modeled evaporation from bare soil]]></article-title>
<source><![CDATA[J. Irrigation and Drainage Engineering]]></source>
<year>2005</year>
<volume>131</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>59-72</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="">
<collab>Originlab</collab>
<source><![CDATA[Origin (Versión SR0 8)]]></source>
<year>2007</year>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peng]]></surname>
<given-names><![CDATA[C-K]]></given-names>
</name>
<name>
<surname><![CDATA[Buldyrev]]></surname>
<given-names><![CDATA[S. V.]]></given-names>
</name>
<name>
<surname><![CDATA[Havlin]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Simons]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Stanley]]></surname>
<given-names><![CDATA[H. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Goldberger]]></surname>
<given-names><![CDATA[A. L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mosaic organization of DNA nucleotides]]></article-title>
<source><![CDATA[Phys. Rev.]]></source>
<year>1994</year>
<volume>E 49</volume>
<page-range>685-1689</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Quintana-Gomez]]></surname>
<given-names><![CDATA[R.A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Changes in evaporation patterns detected in northernmost South America]]></source>
<year>1998</year>
<conf-name><![CDATA[ 7thInt. Meeting on Statistical Climatology. Whistler]]></conf-name>
<conf-loc>BC, Canada </conf-loc>
<page-range>97</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Roderick]]></surname>
<given-names><![CDATA[M.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Farquhar]]></surname>
<given-names><![CDATA[G. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Changes in Australian pan evaporation from 1970 to 2002]]></article-title>
<source><![CDATA[Int. J. Climatol.]]></source>
<year>2004</year>
<volume>24</volume>
<page-range>1077-90</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="">
<collab>Secretaría del Medio Ambiente y Recursos Naturales (SEMARNAT)</collab>
<source><![CDATA[Volúmenes de recarga y extracción de acuíferos sobreexplotados]]></source>
<year>2008</year>
</nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Trömel]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Schönwiese]]></surname>
<given-names><![CDATA[C. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Robust trend estimation of observed German precipitation]]></article-title>
<source><![CDATA[Theoretical and Applied Climatology]]></source>
<year>2008</year>
<volume>93</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>107-15</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Turcotte]]></surname>
<given-names><![CDATA[D.L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fractals and Chaos in Geology and Geophysics]]></source>
<year>1992</year>
<publisher-loc><![CDATA[Cambridge ]]></publisher-loc>
<publisher-name><![CDATA[Cambridge University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="">
<collab>TruSoft International Inc</collab>
<source><![CDATA[Benoit Fractal Analysis System (Versión 1.3)]]></source>
<year>1999</year>
</nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Valdez-Cepeda]]></surname>
<given-names><![CDATA[RD]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Ramírez]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendoza]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Valdés-Galicia]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Maravilla]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fractality of monthly extreme minimum temperature]]></article-title>
<source><![CDATA[Fractals]]></source>
<year>2003</year>
<volume>11</volume>
<page-range>137-44</page-range></nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Valdez-Cepeda]]></surname>
<given-names><![CDATA[R.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendoza]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz-Sandoval]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Valdés-Galicia]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Martínez]]></surname>
<given-names><![CDATA[J. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez-Rubín de Celis]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Power-spectrum behavior of yearly mean grain yields]]></article-title>
<source><![CDATA[Fractals]]></source>
<year>2003</year>
<volume>11</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>295-301</page-range></nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Weber]]></surname>
<given-names><![CDATA[R. O.]]></given-names>
</name>
<name>
<surname><![CDATA[Talkner]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Spectra and correlations of climate data from days to decades]]></article-title>
<source><![CDATA[J. Geophys. Res. D.]]></source>
<year>2001</year>
<volume>106</volume>
<page-range>20131-44</page-range></nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wilks]]></surname>
<given-names><![CDATA[D. S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Statistical Methods in the Atmospheric science]]></source>
<year>2011</year>
<page-range>42</page-range><publisher-name><![CDATA[Academic Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yunling]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Yiping]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Climate change from 1960 to 2000 in the Lancang River Valley, China]]></article-title>
<source><![CDATA[Mountain Research and Development]]></source>
<year>2005</year>
<volume>25</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>341-8</page-range></nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zubair]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[El Niño Southern Oscillation influences on rice production in Sri Lanka]]></article-title>
<source><![CDATA[Int. J. Climatol.]]></source>
<year>2002</year>
<volume>22</volume>
<page-range>249-60</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
