On the systematic linear variation of atomic expectation values

Roothaan-Hartree-Fock atomic wavefunctions

1974 • 5,462 citations

Scaling problem, virial theorem, and connected relations in quantum mechanics

1959 • 502 citations

Electronic correlation energy in 3- and 4-electron atoms

1961 • 251 citations

A perturbation calculation of properties of the helium iso-electronic sequence

1958 • 199 citations

An expansion method for calculating atomic properties

1961 • 37 citations

On the systematic behaviour of certain Hartree-Fock expectation values

1978 • 16 citations