[1] UNIV MILAN,DEPARTIMENTO FIS,I-20133 MILANO,ITALY
[2] INST NAZL FIS NUCL,SEZ MILANO,I-20133 MILANO,ITALY
[3] KERNFYS VERSNELLER INST,9747 AA GRONINGEN,NETHERLANDS
[4] CEN,DEPT RECH FONDAMENTALE,SERV PHYS,F-38041 GRENOBLE,FRANCE
[5] UNIV GRENOBLE 1,INST SCI NUCL,F-38026 ST MARTIN DHERES,FRANCE