Molecular mechanical models for organic and biological systems going beyond the atom centered two body additive approximation: aqueous solution free energies of methanol and N-methyl acetamide, nucleic acid base, and amide hydrogen bonding and chloroform/water partition coefficients of the nucleic acid bases. - Piotr Cieplak; James W. Caldwell; Peter A. Kollman (J. Comput. Chem., 2001)

A point-charge force field for molecular mechanics simulations of proteins based on condensed-phase quantum mechanical calculations. - Yong Duan; Chun Wu; Shibasish Chowdhury; Mathew C. Lee; Guoming Xiong; Wei Zhang; Rong Yang; Piotr Cieplak; Ray Luo 001; Tai-Sung Lee; James W. Caldwell; Junmei Wang; et al. (J. Comput. Chem., 2003)

Development and testing of a general amber force field. - Junmei Wang; Romain M. Wolf; James W. Caldwell; Peter A. Kollman; David A. Case (J. Comput. Chem., 2004)

Junmei Wang, Romain M. Wolf, James W. Caldwell, Peter A. Kollman, and David A. Case, "Development and testing of a general amber force field" Journal of Computational Chemistry(2004) 25(9) 1157-1174. - Junmei Wang; Romain M. Wolf; James W. Caldwell; Peter A. Kollman; David A. Case (J. Comput. Chem., 2005)