<?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>S2448-718X2009000100237</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Rentabilidad, concentración y eficiencia en el sistema bancario mexicano]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerrero Mora]]></surname>
<given-names><![CDATA[Rodolfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villalpando Benítez]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Banco de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2009</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2009</year>
</pub-date>
<volume>76</volume>
<numero>301</numero>
<fpage>237</fpage>
<lpage>263</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-718X2009000100237&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-718X2009000100237&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-718X2009000100237&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En años recientes ha surgido un creciente interés por verificar el paradigma que mejor explica la relación entre la estructura de mercado y las ganancias en el sistema bancario mexicano: poder de mercado o eficiencia. Para poner a prueba estos paradigmas, en este artículo se elaboran indicadores específicos de eficiencia basados en el concepto de frontera eficiente, los cuales se incorporan en la prueba tradicional de estructura de mercado-conducta-desempeño. En contraste con estudios anteriores, en este artículo se encuentran pruebas en favor sólo de la hipótesis de poder de mercado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: In recent years, a growing interest has emerged to verify which paradigm better explains the profit-structure relationship in the Mexican banking industry: market power or efficiency. To test these two paradigms, this work constructs specific indicators of cost efficiency based on the efficiency frontier concept. This is done in order to incorporate these indicators into the traditional profit-structure test. In contrast to previous studies, this study finds empirical evidence in favor of the market power hypothesis only.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[estructura de mercado]]></kwd>
<kwd lng="es"><![CDATA[industria bancaria]]></kwd>
<kwd lng="es"><![CDATA[rentabilidad bancaria]]></kwd>
<kwd lng="es"><![CDATA[eficiencia bancaria]]></kwd>
</kwd-group>
</article-meta>
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<article-title xml:lang=""><![CDATA[The Concentration-Profits Relationship and Antitrust]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Goldschmid]]></surname>
<given-names><![CDATA[H. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Mann]]></surname>
<given-names><![CDATA[H. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Weston]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Industrial Concentration: The New Learning]]></source>
<year>1974</year>
<publisher-loc><![CDATA[Boston ]]></publisher-loc>
<publisher-name><![CDATA[Little Brown]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
