[1] UNIV BONN, PHYS INST, BONN, WEST GERMANY
[2] EUROPEAN ORG NUCL RES, CTR EUROPEAN RES NUCL, GENEVA, SWITZERLAND
[3] INST HOCHENERGIE PHYS, HEIDELBERG, WEST GERMANY
[4] INST NUCL RES, WARSAW, POLAND
[5] TH AACHEN, PHYS INST 3, AACEN, WEST GERMANY
[6] DAWB, INST HOCHENERGIE PHYS, BERLIN, EAST GERMANY
[7] ACAD MIN & MET, INST NUCL RES, DEPT PHYS, CRACOW, POLAND