Donald E. Williams Improved intermolecular force field for crystalline oxohydrocarbons including OHO hydrogen bonding. 1-20 2001 22 Journal of Computational Chemistry 1 http://dx.doi.org/10.1002/1096-987X(20010115)22:1<1::AID-JCC2>3.0.CO;2-6 db/journals/jcc/jcc22.html#Williams01