Studies on internal migration are constrained by the fact that no international organisation systematically collects or tabulates even the basic demographic information on internal migration in a cross-sectionally and temporally comparable manner. Researchers have surprisingly concluded that internal migration within Asian countries is high and increasing over time.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/exclusionary-urbanisation-asia-macro-overview
[2] http://admin.indiaenvironmentportal.org.in/category/author/amitabh-kundu
[3] http://admin.indiaenvironmentportal.org.in/category/journal/economic-and-political-weekly
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/habitat-and-urbanisation
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/migration
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urbanisation
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/population
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/asia
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/statistics
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/globalisation