1. A. Kazi, G. Kramer andD. H. Schiller: Desy report Desy 75/10 (May 1975).
2. A. Kazi, G. Kramer andD. H. Schiller: Desy report, Desy 75/11 (May 1975).
3. G. J. Feldman andM. L. Perl:Phys. Rep. (to be published).
4. SeeJ. F. Bolzan, K. A. Geer, W. F. Palmer andS. S. Pinsky: preprint Fermi National Accelerator Laboratory (Fermilab-Pub-75/62-THY, August 1975) for a similar discussion in the frame work of the 0-meson model.
5. Particle Data Group:Phys. Lett.,50 B, 1 (1974).