Bhattacharjee, G.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1980 , vol. 19, # 5 p. 377 - 381

Wayne, Gregory S.; Snyder, Gary J.; Rogers, Donald W.
Journal of the American Chemical Society, 1993 , vol. 115, # 21 p. 9860 - 9861