Zhang, Xiaoyan; De Los Angeles, Joseph E.; He, Mei-Ying; Dalton, James T.; Shams, Gamal; Lei, Longping; Patil, Popat N.; Feller, Dennis R.; Miller, Duane D.; Hsu, Fu-Lian Journal of Medicinal Chemistry, 1997 , vol. 40, # 19 p. 3014 - 3024