[1] INST PHYS NUCL,ORSAY,FRANCE
[2] IST NAZL FIS NUCL,I-16146 GENOA,ITALY
[3] UNIV GENOA,GENOA,ITALY
[4] UNIV CATANIA,CATANIA,ITALY
[5] IST NAZL FIS NUCL,LAB NAZL SUD,I-95129 CATANIA,ITALY
[6] IST NAZL FIS NUCL,NAZL FRASCATI LAB,I-00044 FRASCATI,ITALY
[7] IST NAZL FIS NUCL,SEZ ROMA 2,ROME,ITALY
[8] UNIV ROMA TOR VERGATA,I-00173 ROME,ITALY
[9] IST NAZL FIS NUCL,I-10125 TURIN,ITALY
[10] UNIV TURIN,TURIN,ITALY
[11] IST NAZL FIS NUCL,SEZ SANITA,I-00161 ROME,ITALY
[12] INST SUPER SANITA,ROME,ITALY
[13] RUSSIAN ACAD SCI,INST NUCL RES,MOSCOW,RUSSIA
[14] IV KURCHATOV ATOM ENERGY INST,MOSCOW 123182,RUSSIA