1. Randall, L. O. and Kappell, B. 1973.The Benzodiazepines, Edited by: Garattini, S., Mussini, E. and Randall, L. O. 27New York: Raven Press. and review articles cited therein
2. Kyburz, E. 1981.Medicinal Chemistry Advaces, Edited by: de las Heras, F. G. and Vega, S. 355Oxford: Pergamon.