Optimal double-configuration study of the lowest excited Π states of H2 - II. σ - π separationKarl JugPeter G. Lykoset al.1972Theoretica Chimica Acta
Optimal double-configuration study of the lowest excited Π states of H2 - I. Potential energy curves and one-electron propertiesKarl JugPeter G. Lykoset al.1972Theoretica Chimica Acta