1. E.D. Commins and P.H. Bucksbaum, Weak Interactions of Leptons and Quarks (Cambridge University Press, 1983 ).
2. R.W. Dunford, R.R. Lewis and W.L. Williams, Phys. Rev.
A18 (1978) 2421.
3. Ya. B. Zel’dovich, Zh. Eksp. Teor. Fiz.
36 (1959) 964.
4. F.C. Michel, Phys. Rev.
B138 (1965) 408.
5. F.J. Hasert, et al., Phys. Lett.
46B (1973) 121; Phys. Lett.
46B (1973) 138.