Visited institutes

• Duke University,
• Technical University of Berlin,
• Technical University of Torino,
• University of Catania,
• University of Dortmund,
• University of Erlangen,
• University of Messina,
• University of North Carolina at Chapel Hill,
• University of Rennes, Irisa, Inria,
• University of Torino,

Photos from visits and conferences

• Berlin, 1994.
• North Carolina, USA, 1995.
• Catania, 1996.
• Erlangen, 1998.
• Catania, 2000.
• Erlangen, 2000.
• Berlin, 2001.

• Istambul, 1998.
• Zaragoza, 1999.