Dubowchik, Gene M; Radia, Shilpa; Mastalerz, Harold; Walker, Michael A.; Firestone, Raymond A.; Dalton King, H.; Hofstead, Sandra J.; Willner, David; Lasch, Shirley J.; Trail, Pamela A. Bioorganic and Medicinal Chemistry Letters, 2002 , vol. 12, # 11 p. 1529 - 1532