El-Sharief, A. M. Sh.; Hammad, N.E.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1981 , vol. 20, # 12 p. 1039 - 1042
Tripathi, Shephali; Ahmad, Shakeel; Barthwal, J. P.; Kishor, K.; Tangri, K. K.; Bhargava, K. P.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1982 , vol. 21, # 4 p. 379 - 380