Intramolecular interaction energies in model alanine and glycine tetrapeptides. Evaluation of anisotropy, polarization, and correlation effects. A parallel ab initio HF/MP2, DFT, and polarizable molecular mechanics study. - Nohad Gresh; Sherif A. Kafafi; Jean-François Truchon; Dennis R. Salahub (J. Comput. Chem., 2004)