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Quartic-Scaling Analytical Gradient of Quasidegenerate Scaled Opposite Spin Second-Order Perturbation Corrections to Single Excitation Configuration Interaction Rhee, Young Min; Casanova, David; Head-Gordon, Martin, JOURNAL OF CHEMICAL THEORY AND COMPUTATION, v.5, no.5, pp.1224 - 1236, 2009-05 |
Scaled second-order perturbation corrections to configuration interaction singles: Efficient and reliable excitation energy methods Rhee, Young Min; Head-Gordon, Martin, JOURNAL OF PHYSICAL CHEMISTRY A, v.111, no.24, pp.5314 - 5326, 2007-06 |
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