Ahluwalia, V. K.; Singh, Raj P.; Singh, Rishi P.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1984 , vol. 23, # 1 p. 42 - 45

Prado, Soizic; Janin, Yves L.; Saint-Joanis, Brigitte; Brodin, Priscille; Michel, Sylvie; Koch, Michel; Cole, Stewart T.; Tillequin, Francois; Bost, Pierre-Etienne
Bioorganic and Medicinal Chemistry, 2007 , vol. 15, # 5 p. 2177 - 2186