[1] RHEIN WESTFAL TH AACHEN,INST PHYS,IIL,D-5100 AACHEN,FED REP GER
[2] BROOKHAVEN NATL LAB,UPTON,NY 11973
[3] CALTECH,PASADENA,CA 91125
[4] DESY,D-2000 HAMBURG 52,FED REP GER
[5] MIT,NUCL SCI LAB,CAMBRIDGE,MA 02139
[6] UNIV GENEVA,CH-1211 GENEVA 4,SWITZERLAND
[7] CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA
[8] SWISS FED INST TECHNOL,CH-8093 ZURICH,SWITZERLAND
[9] NATL INST KERNFYS & HOGE ENERGIEFYS,1009 DB AMSTERDAM,NETHERLANDS
[10] AKAD WISSENSCH DDR,INST HOCHENERGIEPHY,DDR-1615 BERLIN,GER DEM REP