Towards an ab initio determinition of all the parameters which appear in semi-empirical quantum chemical theories

On the Non-Orthogonality Problem Connected with the Use of Atomic Wave Functions in the Theory of Molecules and Crystals

1950 • 2,996 citations

Studies in Perturbation Theory. IV. Solution of Eigenvalue Problem by Projection Operator Formalism

1962 • 621 citations

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

1965 • 432 citations

An Improvement in the π-Electron Approximation in LCAO MO Theory

1953 • 351 citations

Theory of Separability of Many-Electron Systems

1971 • 300 citations

Theory of Atomic Structure Including Electron Correlation. I. Three Kinds of Correlation in Ground and Excited Configurations

1969 • 222 citations

On the Pi-Electron Approximation and Its Possible Refinement

1956 • 216 citations

Many-Electron Theory of Nonclosed-Shell Atoms and Molecules. I. Orbital Wavefunction and Perturbation Theory

1966 • 203 citations

Ground States of Conjugated Molecules. I. Semiempirical SCF MO Treatment and Its Application to Aromatic Hydrocarbons

1965 • 135 citations

Consistency requirement in the Pariser-Parr-Pople model

1967 • 124 citations

On the development of semiempirical methods in the MO formalism

1969 • 91 citations

Many-Electron Theory of Nonclosed-Shell Atoms and Molecules. II. Variational Theory

1966 • 82 citations

Many-Body Theories of the Electronic Structure of Atoms and Molecules

1971 • 77 citations

Sigma and Pi Changes in Valence States of Pi-Electron Theory and One-Center Coulomb Repulsion Parameters

1965 • 56 citations

Pi-Electron Hamiltonian

1967 • 50 citations

A derivation of the exact pi-electron hamiltonian

1972 • 47 citations

Pi-Electron Hamiltonian. II. Inclusion of Self-Consistent Screening

1968 • 38 citations

Correlation Energy Calculations and Unitary Transformations for LiH

1968 • 38 citations

Generalized Time-Dependent Hartree Theory and the Coupling between Sigma and Pi Electrons

1967 • 25 citations

Generalized Perturbation Theory and its Application to the Problem of the Description of Electron Correlation in Atoms and Molecules

1968 • 17 citations

On the theory of electron correlation in atoms and molecules: Relation between cluster expansion theory and the correlated wave functions method

1971 • 15 citations

Perturbation theory for configuration interaction wavefunctions

1971 • 9 citations