Larsen, Robert D.; Corley, Edward G.; King, Anthony O.; Carroll, James D.; Davis, Paul; Verhoeven, Thomas R.; Reider, Paul J.; Labelle, Marc; Gauthier, Jacques Y.; Xiang, Yi Bin; Zamboni, Robert J. Journal of Organic Chemistry, 1996 , vol. 61, # 10 p. 3398 - 3405