1. See for example:B. W. Lee:Elementary Particles Conference (Colorado, 1964);N. Cabibbo:Third Coral Gables Conference on Symmetry Principles at High Energies, 1965.
2. For example:N. P. Samios:Weak Interactions, Argonne, October 1965.
3. G. Murtaza:Ph. D. Thesis, (London, 1965).
4. The result that β=0 is consistent with the experimental data see ref. (2) above For example:N. P. Samios:Weak Interactions, Argonne, October 1965.
5. A. Salam, R. Delbourgo andJ. Strathdee:Proc. Roy. Soc., A284, 146 (1965);B. Sakita andK. C. Wali:Phys. Rev. Lett.,14, 404 (1965);M. A. B. Bég andA. Pais:Phys. Rev. Lett.,14, 267 (1965).