• Talk and paper for ICHEP94 International Conference, Glasgow-Scotland, July 1994
• Talk and paper for Heavy Quarks at Fixed Target Workshop, St.Goar-Germany, October 1996
• Talk and paper for Hyperons, Charm and Beauty Hadrons International Conference, Genova-Italy,June 1998
• Talk and paper for The Chicago Conference on Kaon Physics (KAON'99), Chicago-U.S.A., June 1999
• Seminar at Orsay(LAL) on December 17th 1999
• Talk and paper for UK Phenomenology Workshop on Heavy Flavour and CP Violation - Durham, England, 17-22 September 2000
• Talk and paper for 5th Heavy Quarks at Fixed Target - Rio de Janeiro, Brazil, 9-12 October 2000
• Talk (in Italian) and paper (in English) for XIII Convegno sulla Fisica al LEP - Roma, Italy, 18-20 April 2001
• Talk for Workshop on Prospects for CLEO/CESR with 3< E_cm < 5 - Cornell University Ithaca, New York State-U.S.A., 5-7 May 2001
• Seminar at CBPF (Brasil) on June 2002
• Talk for Frontier Science 2002 - Charm, Beauty and CP - INFN Laboratori, Frascati, Italy, 6-11 October 2002
• Talk and paper for Workshop on the CKM Unitary Triangle - Durham, England, 5-9 April 2003
• Talk and paper for International Europhysics Conference on High Energy Physics (EPS) - Aachen, Germany, 17-23 July 2003
• Talk for LXXXIX Congresso Nazionale (SIF 2003) - Parma, Italy, 17-22 September 2003
• Talk and paper for XXIV Physics in Collision (PIC2004) - Boston, USA, 27-29 June 2004
• Talk and paper for Charm 2012 The 5th International Workshop on Charm Physics - Honolulu, Hawaii, 14-17 May 2012