1. Baruah, B., and Freitas, Y.M. (1978). Indian J. Exp. Biol. 16, 1113?1114.
2. Gamati, S.Y. (1988). Ph.D. Thesis, Faculty of Science, Alex. Univ.
3. Nishio, N. and Kamikubo, T. (1970). J. Fermentation Technology, 48 (1), 1?7.
4. Nishio, N. and Kamikubo, T. (1971). Agr. Biol. Chem. 35 (4), 485?490.
5. Olczyk, C. (1978). Fol. J. Pharmacol. Pharm. 30, 83?88.