SEARCH Articles Figures Tables Moller Moller second-order Moller-Plesset Moller-Plesset perturbation theory order Moller-Plesset perturbation theory second-order energy derivatives Moller-Plesset second-order Moller-Plesset second-order perturbation Moller-Plesset theory Moller-Plesset, second-order theory Perturbation order Perturbation, Moller-Plesset Plesset Perturbation Theory Second-order theory Some Applications of Second-order Many-body Perturbation Theory with a Moller-Plesset Reference Hamiltonian