Padmanabhan, P. V.; Ramana, D. V.; Ramadas, S. R. Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1988 , vol. 27, # 1-12 p. 726 - 728 Title/Abstract Show Details Padmanabhan, P. V.; Rao, K. J. Jagannadha; Ramana, D. V.; Ramadas, S. R. Heterocycles, 1981 , vol. 16, # 1 p. 1 - 4