1. Particle Data Group, Review of Particle Properties, UCRL 8030. Pt. I (1969).
2. R. Dolen, D. Horn, and C. Schmid, Phys. Rev., 166, 1768 (1968).
3. O. W. Greenberg, Resonance Models, Technical Report No. 70–017, University of Maryland (1969).
4. V. L. Auslander et al., Phys. Lett., 25B, 433 (1967).
5. R. H. Dalitz, in: Meson Spectroscopy, edited by C. Baltay and A. H. Rosenfeld, Benjamin, New York (1968), p. 497.