Purkayastha, M L; Chandrasekharam, M; Ila, H, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1991, vol. 30, # 7, p. 646 - 650
Purkayastha, M L; Chandrasekharam, M; Ila, H, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1991, vol. 30, # 7, p. 646 - 650