Harter, William G., 1943- A unitary calculus for electronic orbitals William G. Harter, Christopher W. Patterson - Berlin Springer-Verlag 1976 - 144 p. : ill. ; 25 cm. - Lecture notes in physics 49 . Includes bibliographical references. ISBN: 0387076999 LCCN: 76-17274 Subjects--Topical Terms: ElectronsAtomic orbitalsMolecular orbitalsUnitary operators