1. W. Bugg andH. Cohen:Bull. Am. Phys. Soc,8, 347 (1963).
2. P. L. Jain: Post deadline paper at the Spring 1963 Meeting of the American Physical Society in Washington, D. C.
3. E. Harth: Syracuse University, Report in preparation (1963).
4. R. Oakes:Proc. Athens Conf. Recently Discovered Resonant Particles (Athens, Ohio, 1963).
5. O. Dahl, N. Horwitz, D. Millee, J. Murray andP. White:Phys. Rev. Lett.,6, 142 (1961).