Links:
[1] http://admin.indiaenvironmentportal.org.in/news/oil-willing-take-over-ongcs-assam-oilfields
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/assam-tribune-guwahati
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oil-exploration
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-petroleum-natural-gas
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/assam
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oil-and-natural-gas-corporation-ongc