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2. J. Steinberger andG. Lütjens:Phys. Rev. Lett.,12, 517 (1964);W. D. Walker, J. Boyd, A. R, Erwin, P. H. Satterbloom, M. A. Thompson andE. West:Phys. Lett.,8, 208 (1964).
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4. L. E. Picasso, L. A. Radicati, D. P. Zanello andJ. J. Sakurai: preprint.
5. J. J. Sakurai:Phys. Rev.,132, 434 (1963).