Venugopalan, B; Bapt, C P; deSouza, E Pinto; deSouza, N J
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1992 , vol. 31, # 1 p. 35 - 38

Venugopalan, B; Bapt, C P; deSouza, E Pinto; deSouza, N J
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1992 , vol. 31, # 1 p. 35 - 38

MacMillan,J.H.; Washburne,S.S.
Journal of Heterocyclic Chemistry, 1975 , vol. 12, p. 1215 - 1220