Ornstein, Paul L.; Bleisch, Thomas J.; Arnold, M. Brian; Kennedy, Joseph H.; Wright, Rebecca A.; Johnson, Bryan G.; Tizzano, Joseph P.; Helton, David R.; Kallman, Mary Jeanne; Schoepp, Darryle D.; Herin, Marc Journal of Medicinal Chemistry, 1998 , vol. 41, # 3 p. 358 - 378