Lewis, Frederick D.; Bassani, Dario M.; Burch, Eric L.; Cohen, Bliss E.; Engleman, Jeffrey A.; Reddy, G. Dasharatha; Schneider, Siegfried; Jaeger, Wighard; Gedeck, Peter; Gahr, Michael Journal of the American Chemical Society, 1995 , vol. 117, # 2 p. 660 - 669