1. Review of Environmental Statements, special publication;Chakrabarti,1996
2. Gazette Notification No. GSR 774(E), of September 10, 1990 of the Ministry of Environment and Forests, Govt. of India, Paryavaran Bhawan, CGO Complex, Lodi Road, New Delhi 110 003, India.
3. Gazette Notification No. GSR 329(E), of March 13, 1992 of the Ministry of Environment and Forests, Govt. of India, Paryavaran Bhawan, CGO Complex, Lodi Road, New Delhi 110 003, India.
4. Gazette Notification No. GSR 736(E), of August 26, 1992 of the Ministry of Environment and Forests, Govt. of India, Paryavaran Bhawan, CGO Complex, Lodi Road, New Delhi 110 003, India.