Mixed ab initio QM/MM modeling using frozen orbitals and tests with alanine dipeptide and tetrapeptide. - Dean M. Philipp; Richard A. Friesner (J. Comput. Chem., 1999)

A mixed quantum mechanics/molecular mechanics (QM/MM) method for large-scale modeling of chemistry in protein environments. - Robert B. Murphy; Dean M. Philipp; Richard A. Friesner (J. Comput. Chem., 2000)

Integrated Modeling Program, Applied Chemical Theory (IMPACT). - Jay L. Banks; Hege S. Beard; Yixiang X. Cao; Art E. Cho; Wolfgang Damm; Ramy Farid; Anthony K. Felts; Thomas A. Halgren; Daniel T. Mainz; Jon R. Maple; Robert B. Murphy; Dean M. Philipp; et al. (J. Comput. Chem., 2005)