Nakajima99

T. Nakajima and H. Nakatsuji, “Energy gradient method for the ground, excited, ionized, and electron-attached states calculated by the SAC (symmetry-adapted cluster)/SAC-CI (configuration interaction) method,” Chem. Phys., 242 (1999) 177-93. DOI: 10.1016/S0301-0104(99)00004-X