Extended Hartree-Fock theory for excited states

New Developments in Molecular Orbital Theory

Clemens Roothaan · Reviews of Modern Physics · 1951 · 5.5K citations

Natural Sciences, Chemistry, Physics +14

Self-Consistent Field Theory for Open Shells of Electronic Systems

Clemens Roothaan · Reviews of Modern Physics · 1960 · 2K citations

Natural Sciences, Physics, Computational Physics +12

Excited States of H2O using improved virtual orbitals

sWilliam J. Hunt, William A. Goddard · Chemical Physics Letters · 1969 · 618 citations

Natural Sciences, Chemistry, Physics +14

Many-Body Perturbation Theory Applied to Atoms

Hugh P. Kelly · Physical Review · 1964 · 502 citations

Natural Sciences, Physics, Atomic Physics +15

Studies in Perturbation Theory. X. Lower Bounds to Energy Eigenvalues in Perturbation-Theory Ground State

Per‐Olov Löwdin · Physical Review · 1965 · 437 citations

Natural Sciences, Mathematics, Physics +15