1. Bentley, R., and Trimen, H. (1980). Medicinal plants-I (Chap. 14).
2. Boullay, P. F. G. (1980). Ann. Chim. Phys. (Paris), 209, 1811.
3. Corey, E. J., Pearce, H. L. (1978). J. Am. Chem. Soc. 101, 5841.
4. Corey, E. J., Pearce, H. L. (1980). Tetrahedron Lett. 21, 1823.
5. Drury, H. (1973). The useful plants of India (p. 512). London: William H. Allen and Co.