Yap, Jeremy L.; Cao, Xiaobo; Vanommeslaeghe, Kenno; Jung, Kwan-Young; Peddaboina, Chander; Wilder, Paul T.; Nan, Anjan; MacKerell, Alexander D.; Smythe, W. Roy; Fletcher, Steven Organic and Biomolecular Chemistry, 2012, vol. 10, # 15 p. 2928 - 2933 doi: 10.1039/c2ob07125h