An, Haoyun; Cummins, Lendell L.; Griffey, Richard H.; Bharadwaj, Ramesh; Haly, Becky D.; Fraser, Allister S.; Wilson-Lingardo, Laura; Risen, Lisa M.; Wyatt, Jacqueline R.; Cook, P. Dan Journal of the American Chemical Society, 1997, vol. 119, # 16 p. 3696 - 3708 doi: 10.1021/ja964153r