El-Gendy, A. et al. 2010. Some Reactions of Diethyl-2,3,4,6,7,8,9,10-octahydro- 2,6-dioxo-4,8-diphenyl-4a,8a-anthracene Dicarboxylate with Nitrogen and Carbon Nucleophiles . Asian Journal of Chemistry. 2, 2 (Mar. 2010), 168–180.