Nagarajan, Kuppuswamy; Talwalker, Purnachard K.; Goud, A. Nagana; Shah, Rashmi K.; Shenoy, Sharada J.; Desai, Narasimha D.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1988 , vol. 27, # 1-12 p. 1113 - 1123