<?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>2448-718X</journal-id>
<journal-title><![CDATA[El trimestre económico]]></journal-title>
<abbrev-journal-title><![CDATA[El trimestre econ]]></abbrev-journal-title>
<issn>2448-718X</issn>
<publisher>
<publisher-name><![CDATA[Fondo de Cultura Económica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-718X2014000300579</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Eficiencia y equilibrio en un modelo de formación de derechos de propiedad]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Da-Rocha]]></surname>
<given-names><![CDATA[José-María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pujolás]]></surname>
<given-names><![CDATA[Pau S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sempere]]></surname>
<given-names><![CDATA[Jaume]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade de Vigo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,McMaster University  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Canada</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,El Colegio de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2014</year>
</pub-date>
<volume>81</volume>
<numero>323</numero>
<fpage>579</fpage>
<lpage>593</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-718X2014000300579&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-718X2014000300579&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-718X2014000300579&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este artículo se presenta un modelo en que los agentes deben tomar decisiones acerca de la formalización de los derechos de propiedad sobre la tierra. En el modelo se muestra la existencia de un equilibrio en el que coexisten agentes que producen en tierras de libre acceso y agentes que producen en tierras de propiedad privada. Este equilibrio es ineficiente porque el esfuerzo para formalizar la tierra es menor de lo necesario.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract We characterize the stationary competitive equilibrium in a model in which private decisions have to be made to define effective property rights on land. We show that there is an interior competitive equilibrium in which there will be some agents producing in free access lands and others in private property land. This equilibrium is inefficient because too few plots of land are enclosed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[derechos de propiedad]]></kwd>
<kwd lng="es"><![CDATA[productividad]]></kwd>
<kwd lng="es"><![CDATA[eficiencia]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Cambios en la tenencia de la tierra y la productividad del maíz en México]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Acosta-Peña]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Revista Mexicana de Economía Agrícola y de los Recursos Naturales]]></source>
<year>2008</year>
<volume>1</volume>
<page-range>57-67</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Allen]]></surname>
<given-names><![CDATA[R. &#1057;.]]></given-names>
</name>
</person-group>
<source><![CDATA[Enclosure and the Yeoman: The Agricultural Development of the South Midlands, 1450-1850]]></source>
<year>1993</year>
<publisher-loc><![CDATA[Oxford ]]></publisher-loc>
<publisher-name><![CDATA[Clarendon Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[The Determinants and Impact of Property Rights: Land Title on the Brazilian Frontier]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alston]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Libecap]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Schneider]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Journal of Law, Economics, and Organization]]></source>
<year>1996</year>
<volume>12</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>25-61</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Property Rights and Investment Incentives: Theory and Evidence from Ghana]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Besley]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Journal of Political Economy]]></source>
<year>1995</year>
<volume>103</volume>
<page-range>903-37</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Besley]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Ghatak]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Property Rights and Economic]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Rodrik]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Rosenzweig]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Handbook of Development Economics]]></source>
<year>2010</year>
<volume>5</volume>
<publisher-name><![CDATA[Elsevier]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brown]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Dimitrova]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Ehrenberg]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Heyes]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Kusek]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Orozco]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Vilchis]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Secure Tenure in Latin America and the Caribbean: Regularization of Informal Urban Settlements in Peru, Mexico and Brazil]]></source>
<year>2006</year>
<publisher-loc><![CDATA[Princeton ]]></publisher-loc>
<publisher-name><![CDATA[Woodrow Wilson School of Public and International Affairs, Princeton University]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Heath]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Enhancing the Contribution of Land Reform to Mexican Agricultural Development]]></source>
<year>1990</year>
<publisher-name><![CDATA[World Bank]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[The Social Efficiency of Private Decisions to Enforce Property Rights]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[De Meza]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Gould]]></surname>
<given-names><![CDATA[J. R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Journal of Political Economy]]></source>
<year>1992</year>
<volume>100</volume>
<page-range>561-80</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dixit]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Pindyck]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Investment under Uncertainty]]></source>
<year>1994</year>
<publisher-name><![CDATA[Princeton University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Field]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Torero]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Do Property Titles Increase Credit Access Among the Urban Poor? Evidence from a Mationwide Titling Program]]></source>
<year>2006</year>
<publisher-name><![CDATA[Harvard University]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Miceli]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Lueck]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Property Law]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Polinsky]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Shavell]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Handbook of Law and Economics]]></source>
<year>2007</year>
<publisher-name><![CDATA[Elsevier]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[The Mystery of Capital]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[De Soto]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Finanze and Development: A quarterly magazine of the IMF]]></source>
<year>2001</year>
<volume>38</volume>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[The Creation of Effective Property Rights]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Grossman]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[American Economic Review]]></source>
<year>2001</year>
<volume>91</volume>
<page-range>347-52</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[The Demarcation of Land and The Role of Coordinating Property Institutions]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Libecap]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Lueck]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Journal of Political Economy]]></source>
<year>2011</year>
<volume>119</volume>
<page-range>426-67</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Selection, Growth, and the Size Distribution of Firms]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Luttmer]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Quarterly Journal of Economics]]></source>
<year>2007</year>
<volume>122</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>1103-44</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Free Access vs. Private Ownership as Alternative Systems for Managing Common Property]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Weitzman]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Journal of Economic Theory]]></source>
<year>1974</year>
<volume>8</volume>
<page-range>225-34</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
