SEARCH Articles Figures Tables Additivity of the second-order dispersion energy Approximation methods second-order energy) Averaged second-order energies Correlation energy relativistic, second order Correlation energy second order Energy second Epstein-Nesbet second-order energy Expanded Energy Corrections up to Second Order Hydrogen molecule second-order energy Intermolecular perturbation second-order energy Metal clusters second-order energy difference Moller-Plesset perturbation theory second-order energy derivatives NMR Parameters Defined as Second-Order Energy Perturbations Nitrogen second-order correlation energy Non-expanded Energy Corrections up to Second Order Ordering energy Perturbation energy, second-order Potential energy surface second-order derivatives Rayleigh-Schrodinger perturbation theory, second order energy Second order energy expression Second-order correction to energy Second-order correlation energy for Second-order energy correction Second-order quasiparticle electron energies Second-order self-energy Second-order stark energy Second-order vibrational perturbation theory energy levels Water second-order correlation energy