1. H. Weyl:The Theory of Groups and Quantum Mechanics (New York).
2. M. Gell-Mann andY. Ne’eman:The Eightfold Way (New York, 1964);F. Y. Dyson:Symmetry Groups in Nuclear and Particle Physics (New York, 1965).
3. T. W. B. Kibble, D. Kastler andH.-P. Dürr inProceedings of the Rochester Conference (1967).
4. G. G. Amch:Algebraic Methods in Statistical Mechanics and Quantum Field Theory (New York, 1972);J. Dixmier:Les C *-algèbres et leurs représentation (Paris, 1969).
5. D. W. Robinson:Algebraic Aspects of Relativistic Quantum Field Theory, Proceedings of the Brandeis University of Summer School (New York, 1965), p. 389.