[1] ELMHURST COLL, DEPT PHYS, ELMHURST, IL 60126 USA
[2] FERMI NATL ACCELERATOR LAB, BATAVIA, IL 60510 USA
[3] UNIV IOWA, DEPT PHYS, IOWA CITY, IA 52242 USA
[4] IOWA STATE UNIV SCI & TECHNOL, DEPT PHYS, AMES, IA 50011 USA
[5] YALE UNIV, JW GIBBS LAB, NEW HAVEN, CT 06511 USA
[6] BP KONSTANTINOV NUCL PHYS INST, LENINGRAD, USSR