C. M. Hoffman^*, A. D. Liberman, E. Engels, Jr., D. C. Imrie^†, P. G. Innocenti^‡, Richard Wilson, and C. Zajde^‡

• Harvard University, Cambridge, Massachusetts 02138

W. A. Blanpied

• Case Western Reserve University, Cleveland, Ohio

D. G. Stairs

• McGill University, Montreal, Canada

D. Drickey^§

• Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305

• ^*National Science Foundation Graduate Fellow.
• ^†Present address: University College London, London, England.
• ^‡Present address: Laboratoire de l'Accélérateur Linéaire, Orsay, France.
• ^§Present address: University of California, Los Angeles, Calif.