Sarma, M. S. Prasad; Rao, G. S. Krishna, Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1985, vol. 24, p. 244 - 246
Sarma, M. S. Prasad; Rao, G. S. Krishna, Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1985, vol. 24, p. 244 - 246