Participation is by invitation only. Participation can be requested by writing to to Giulia Ricciardi (chairperson) or to any other member of the organizing committee. The conference fee is 200 euro. Talks are scheduled from 9.00 am of May 23, up to late afternoon of 25. We urge to make your arrangements as soon as possible; if you reserve late, it is very likely you may not be able to find accommodation. Every participant is kindly asked to take care of her/his own travel and hotel reservation. For organizational or tourist questions, please refer to Dott. Salvatore Verdoliva, salvatore.verdoliva@na.infn.it (scientific secretariat). For scientific questions, please refer to Giulia Ricciardi (chairperson) or to any other member of the organizing committee.