1. A.I. Warwick, A. Baden, H.H. Gurbrod, M.R. Maier, H.G. Ritter, H. Stelzer, F. Weik, H. Wieman, S.B. Kaufman, B.D. Wilkins, E.P. Steinberg and J. Peter. LBL-13831, to be published.
2. Proc. of the 9th International Symposium on Lepton and photon interactions at high energies;Blum,1980