Links:
[1] http://admin.indiaenvironmentportal.org.in/news/plan-afoot-de-congest-gangtok
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/assam-tribune-guwahati
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gangtok
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/congestion
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/transport
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sikkim
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urban-development
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mobility-planning