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<journal-meta>
<journal-id>2683-2852</journal-id>
<journal-title><![CDATA[Carta económica regional]]></journal-title>
<abbrev-journal-title><![CDATA[Carta econ. reg.]]></abbrev-journal-title>
<issn>2683-2852</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guadalajara, Centro Universitario de Ciencias Económico Administrativas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2683-28522023000200005</article-id>
<article-id pub-id-type="doi">10.32870/cer.v0i132.7906</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Migraciones, fronteras y desigualdades]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aksakal]]></surname>
<given-names><![CDATA[Mustafa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calderón Chelius]]></surname>
<given-names><![CDATA[Leticia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Bielefeld  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Germany</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mora  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>36</volume>
<numero>132</numero>
<fpage>5</fpage>
<lpage>15</lpage>
<copyright-statement/>
<copyright-year/>
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</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aksakal]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Warum verlassen Menschen ihre Lebensorte? Ein Überblick über Ansätze zur Erklärung der Initiierung von Wanderung]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Faist]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Sozialwissenschaftliche Einführungen. Soziologie der Migration: Eine systematische Einführung]]></source>
<year>2020</year>
<page-range>97-124</page-range><publisher-loc><![CDATA[Berlín ]]></publisher-loc>
<publisher-name><![CDATA[De Gruyter]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Baran]]></surname>
<given-names><![CDATA[P. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sweezy]]></surname>
<given-names><![CDATA[P. M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Monopoly capital. An essay on the American Economic and social order]]></source>
<year>1966</year>
<publisher-loc><![CDATA[London ]]></publisher-loc>
<publisher-name><![CDATA[Monthly Review Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Battistella]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Temporary labour migration: a flawed system in need of reform]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Carrera]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Geddes]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Guild]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Stefan]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Pathways towards legal migration into the EU. Reappraising concepts, trajectories and policies]]></source>
<year>2017</year>
<page-range>15-9</page-range><publisher-loc><![CDATA[Bruselas ]]></publisher-loc>
<publisher-name><![CDATA[Centre for European Policy Studies]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Blouin]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Zamora-Gómez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Institutional and social xenophobia towards Venezuelan migrants in the context of a racialized country: the case of Peru]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Herrera]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Migration in South America]]></source>
<year>2022</year>
<page-range>169-90</page-range><publisher-loc><![CDATA[Cham, Switzerland ]]></publisher-loc>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Burawoy]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The functions and reproduction of migrant labor: comparative materials from Southern Africa and the United States]]></article-title>
<source><![CDATA[American Journal of Sociology]]></source>
<year>1976</year>
<volume>81</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1050-87</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cardoso]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Falleto]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Dependency and development in Latin America]]></source>
<year>1979</year>
<publisher-loc><![CDATA[Berkeley, CA ]]></publisher-loc>
<publisher-name><![CDATA[University of California Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Castles]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Migration, crisis, and the global labour market]]></article-title>
<source><![CDATA[Globalizations]]></source>
<year>2011</year>
<volume>8</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>311-24</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Conti]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Nejamkis]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Editorial]]></article-title>
<source><![CDATA[Carta Económica Regional]]></source>
<year>2023</year>
<volume>35</volume>
<numero>131</numero>
<issue>131</issue>
<page-range>7-10</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Delgado-Wise]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Chávez-Elorza]]></surname>
<given-names><![CDATA[M. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Gaspar-Olvera]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[La migración mexicana altamente calificada de cara al siglo XXI: problemática y desafíos]]></source>
<year>2021</year>
<publisher-loc><![CDATA[Ciudad de México ]]></publisher-loc>
<publisher-name><![CDATA[Consejo Nacional de Ciencia y Tecnología (Conacyt)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dos Santos]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The structure of dependence]]></article-title>
<source><![CDATA[The American Economic Review]]></source>
<year>1970</year>
<volume>60</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>231-6</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Faist]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[The volume and dynamics of international migration and transnational social spaces]]></source>
<year>2000</year>
<publisher-loc><![CDATA[Oxford, RU ]]></publisher-loc>
<publisher-name><![CDATA[Clarendon Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Faist]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Wege zu einer transnationalen Methodologie]]></article-title>
<source><![CDATA[Soziologie der Migration. Eine systematische Einführung]]></source>
<year>2020</year>
<page-range>237-60</page-range><publisher-loc><![CDATA[Berlin ]]></publisher-loc>
<publisher-name><![CDATA[De Gruyter]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[FitzGerald]]></surname>
<given-names><![CDATA[D. S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The sociology of international migration]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Brettell]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Hollifield]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Migration theory: talking across disciplines]]></source>
<year>2022</year>
<page-range>160-93</page-range><publisher-loc><![CDATA[London ]]></publisher-loc>
<publisher-name><![CDATA[Routledge]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Frank]]></surname>
<given-names><![CDATA[A. G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Capitalism and underdevelopment in Latin America]]></source>
<year>1967</year>
<publisher-loc><![CDATA[London ]]></publisher-loc>
<publisher-name><![CDATA[Monthly Review Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fröbel]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Heinrichs]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Kreye]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
</person-group>
<source><![CDATA[The new international division of labour. Structural unemployment in industrialised countries and industrialisation in developing countries]]></source>
<year>1980</year>
<publisher-loc><![CDATA[Cambridge, RU ]]></publisher-loc>
<publisher-name><![CDATA[Cambridge University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Furtado]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Underdevelopment and dependence: the fundamental connection]]></source>
<year>1974</year>
<publisher-name><![CDATA[Centre of Latin American Studies]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gerhards]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Kämpfer]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Symbolische Grenzen und die Grenzarbeit von Migrantinnen und Migranten]]></article-title>
<source><![CDATA[Zeitschrift für Soziologie]]></source>
<year>2017</year>
<volume>46</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>303-25</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hernández-León]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Sandoval-Hernández]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Muñoz-Paniagua]]></surname>
<given-names><![CDATA[L. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bringing back the Bracero Program: the migration industry in the recruitment of H-2 visa workers]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Saucedo]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[R. M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Race, gender and contemporary international labor migration regimes 21st-century coolies?]]></source>
<year>2022</year>
<page-range>35-62</page-range><publisher-loc><![CDATA[Cheltenham, RU ]]></publisher-loc>
<publisher-name><![CDATA[Edward Elgar Publishing]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lamont]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Molnár]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The study of boundaries in the social sciences]]></article-title>
<source><![CDATA[Annual Review of Sociology]]></source>
<year>2002</year>
<volume>28</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>167-95</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Manning]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Trimmer]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Migration in world history]]></source>
<year>2020</year>
<edition>3</edition>
<publisher-loc><![CDATA[United Kingdom ]]></publisher-loc>
<publisher-name><![CDATA[Taylor &amp; Francis]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Marini]]></surname>
<given-names><![CDATA[R. M]]></given-names>
</name>
</person-group>
<source><![CDATA[Dialéctica de la dependencia]]></source>
<year>1973</year>
<publisher-loc><![CDATA[México ]]></publisher-loc>
<publisher-name><![CDATA[Ediciones Era]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Massey]]></surname>
<given-names><![CDATA[D. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Arango]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Hugo]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Kouaouci]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Pellegrino]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Taylor]]></surname>
<given-names><![CDATA[J. E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Worlds in motion: understanding international migration at the end of the millennium]]></source>
<year>1998</year>
<publisher-loc><![CDATA[Oxford ]]></publisher-loc>
<publisher-name><![CDATA[Clarendon Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Meyer]]></surname>
<given-names><![CDATA[J. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Boli]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Thomas]]></surname>
<given-names><![CDATA[G. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramirez]]></surname>
<given-names><![CDATA[F. O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[World society and the nation&#8208;state]]></article-title>
<source><![CDATA[American Journal of Sociology]]></source>
<year>1997</year>
<volume>103</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>144-81</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Empire of borders. The expansion of the us border around the world]]></source>
<year>2019</year>
<publisher-loc><![CDATA[New York, London ]]></publisher-loc>
<publisher-name><![CDATA[Verso]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Morawska]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Historical-structural models of international migration]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Martiniello]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Rath]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[An introduction to international migration studies: European perspectives]]></source>
<year>2012</year>
<page-range>57-78</page-range><publisher-loc><![CDATA[Amsterdam ]]></publisher-loc>
<publisher-name><![CDATA[Amsterdam University Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nejamkis]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Conti]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Aksakal]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[(Re)pensando el vínculo entre migración y crisis. Perspectivas desde América Latina y Europa]]></source>
<year>2021</year>
<publisher-loc><![CDATA[Buenos Aires ]]></publisher-loc>
<publisher-name><![CDATA[CLACSO]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ostrand]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Statham]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[&#8249;Street-level&#8250; agents operating beyond &#8249;remote control&#8250;: how overseas liaison officers and foreign state officials shape UK extraterritorial migration management]]></article-title>
<source><![CDATA[Journal of Ethnic and Migration Studies]]></source>
<year>2021</year>
<volume>47</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>25-45</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pécoud]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Narrating an ideal migration world? An analysis of the Global Compact for Safe, Orderly and Regular Migration]]></article-title>
<source><![CDATA[Third World Quarterly]]></source>
<year>2021</year>
<volume>42</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>16-33</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pitkänen]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Hayakawa]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Aksakal]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Schmidt]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Rajan]]></surname>
<given-names><![CDATA[S. I.]]></given-names>
</name>
</person-group>
<source><![CDATA[Temporary migration, transformation and development: evidence from Europe and Asia]]></source>
<year>2017</year>
<publisher-loc><![CDATA[London ]]></publisher-loc>
<publisher-name><![CDATA[Routledge]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
