1. Department of Materials Science; Indian Association for the Cultivation of Science; Kolkata 700 032 India
2. Department of Chemistry; Vivekananda Mahavidyalaya, Burdwan, Sripally; Burdwan- 713103 West Bengal India
3. Unilever R & D Bangalore; 64, Main Road, Whitefield Bangalore 560066 India
4. Bio-organic Division; Bhabha Atomic Research Centre; Mumbai- 400 085 India