K. Raghavachari, H. B. Schlegel, and J. A. Pople, “Derivative studies in configuration-interaction theory,” J. Chem. Phys., 72 (1980) 4654-55. DOI: 10.1063/1.439708
K. Raghavachari, H. B. Schlegel, and J. A. Pople, “Derivative studies in configuration-interaction theory,” J. Chem. Phys., 72 (1980) 4654-55. DOI: 10.1063/1.439708
