Analytical orbital wave functions for the two-electron atom

The algebraic eigenvalue problem

1965 • 5,953 citations

�ber die Spektra von Atomsystemen mit zwei Elektronen

1926 • 285 citations

The singlet S states of the helium isoelectronic sequence

1967 • 53 citations

The properties of the helium atom and the two-electron systems

1963 • 46 citations

HARTREE–FOCK WAVE FUNCTIONS FOR EXCITED STATES: II. SIMPLIFICATION OF THE ORBITAL EQUATIONS

1966 • 35 citations

The triplet S states of the helium isoelectronic sequence

1967 • 27 citations

HARTREE–FOCK WAVE FUNCTIONS FOR EXCITED STATES: IV. OSCILLATOR STRENGTHS IN THE HELIUM ISOELECTRONIC SEQUENCE

1967 • 26 citations

Frozen core approximation for atoms and atomic ions

1968 • 21 citations