1. Group Theory and its Application to the Quantum Mechanics of Atomic Spectra (Academic, New York, 1959).
2. and Irreducible Tensorial Sets (Academic, New York, 1959).
3. Ph.D. Thesis, University of Canterbury, New Zealand, 1980, and references therein.
4. Licentiate (Ph.D.) Thesis, University of Copenhagen, 1984, and references therein.
5. (unpublished), and references therein.