1. "Encyclopedia of Pharmacology and Therapeutics; Anti-cholinesterase Agents,",1970
2. "Glossary of Indian Medicinal Plants,";Chopra,1956
3. S. Ghosal, S. K. Banerjee, S. K. Bhattacharya, and A. K. Sanyal, Planta Med., in press.
4. S. Ghosal and S. K. Bhattacharya, ibid., in press.