Lin, Yang-I; Bitha, Panayota; Sakya, Subas M.; Strohmeyer, Timothy W.; Li, Zhong; Lee, Ving J.; Lang Jr., Stanley A.; Yang, Youjun; Bhachech, Niraja; Weiss, William J.; Petersen, Peter J.; Jacobus, Nilda V.; Bush, Karen; Testa, Raymond T.; Tally, Francis P. Bioorganic and Medicinal Chemistry Letters, 1997, vol. 7, # 13 p. 1671 - 1676 doi: 10.1016/S0960-894X(97)00282-5