Peng96

C. Peng, P. Y. Ayala, H. B. Schlegel, and M. J. Frisch, “Using redundant internal coordinates to optimize equilibrium geometries and transition states,” J. Comp. Chem., 17 (1996) 49-56. DOI: 3.0.CO;2-0>10.1002/(SICI)1096-987X(19960115)17:13.0.CO;2-0