Supreme Court order dated 16/04/1999 in M.C. Mehta v. Union of India, WP 13029/1985 on vehicular pollution in Delhi.
Links:
[1] http://admin.indiaenvironmentportal.org.in/reports-documents/supreme-court-order-dated-16041999-mc-mehta-v-union-india-wp-130291985-vehicular
[2] http://admin.indiaenvironmentportal.org.in/category/publisher/supreme-court-india
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/supreme-court
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diesel
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/personal-transport
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rspm-pm-10
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oxides-nitrogen-nox
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects