-- Marco Ripani Senior Scientist, Istituto Nazionale di Fisica Nucleare - Genova Address: INFN Via Dodecaneso 33 16146 GENOVA - ITALY tel./fax 39-010-3536458 cell. 39-328-2191138 Jlab office room F244 tel. 1-757-269-7266 fax 1-757-269-6273 E-Mail: ripani at ge.infn.it