机构:
Univ Nacl Cuyo, Comis Nacl Energia Atom, Ctr Atom Bariloche, CONICET, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
Univ Nacl Cuyo, Comis Nacl Energia Atom, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, ArgentinaUniv Cologne, Inst Theoret Phys, D-50937 Cologne, Germany