Knowles91

P. J. Knowles, J. S. Andrews, R. D. Amos, N. C. Handy, and J. A. Pople, “Restricted Møller-Plesset theory for open shell molecules,” Chem. Phys. Lett., 186 (1991) 130-36. DOI: 10.1016/S0009-2614(91)85118-G