Ziegler, C. B.; Bitha, P.; Kuck, N. A.; Fenton, T. J.; Petersen, P. J.; Lin, Y.-i
Journal of Medicinal Chemistry, 1990 , vol. 33, # 1 p. 142 - 146

Ziegler, C. B.; Bitha, P.; Kuck, N. A.; Fenton, T. J.; Petersen, P. J.; Lin, Y.-i
Journal of Medicinal Chemistry, 1990 , vol. 33, # 1 p. 142 - 146

American Cyanamid Company
Patent: US4940710 A1, 1990 ;