1. Anon, 1967. Indian Standard Institute Bulletin. New Delhi, p. 393.
2. Anon, 1991. The Treatise on Indian Medical Plants. Publication and Information Directorate, CSIR, New Delhi, p. 291.
3. Studies of medicinal plants of Sri Lanka. Part 14. Toxicity of some traditional medicinal herbs;Arseculeratne;Journal of Ethnopharmacology,1985
4. Asolkar, L.V., Kakkar, K.K., Chakre, O.J. 1992. Glossary of Indian Medicinal Plants with Active Principles. Part-1 (A–K), (1965–1981). p. 2.
5. Abiesin: a new biflavonoids from Abies webbiana;Chatterjee;Phytochemistry,1984