During the last 50 years, there have been several bilateral and multilateral initiatives for promoting City-to-City cooperation with varying objectives. These initiatives aim at bringing two or more cities closer to each other at the level of government, communities, and institutions/organisations with the objective of encouraging human contact and cultural link.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/city-city-cooperation-sustainable-urban-development
[2] http://admin.indiaenvironmentportal.org.in/category/author/kulwant-singh
[3] http://admin.indiaenvironmentportal.org.in/category/journal/man-development
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/habitat-and-urbanisation
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urban-development
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/jawaharlal-nehru-national-urban-renewal-mission-jnnurm
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urban-planning
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/international-cooperation
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/asia
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/europe
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sustainable-development
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/statistics