Professional honors, awards and fellowships:
April-May 1990, Moscow State University, Moscow, Russia
October-November 1991, Blaise Pascal University, Clermont-Ferrand, France
1992-1993, Fulbright Scolarship, Florida Institute of Technology, Melbourne, USA
July 1994, University of Florence, Florence, Italy
May 1995, University of Florence, Florence, Italy
May 1997, University of Ioannina, Greece
January-July 1998, CNR Fellowship, University of Florence, Italy
May-June 2002, University of Catania, Italy
July 2002, University of Florence, Italy
May 2003, University of Torino, University of Florence, Italy
November 2004, Astronomical Observatory of Torino, Italy