Participation in international congresses and symposia

• International Geological Congress 1984 (Moscow) - co-chairman section C.07.1.6;
• International Geological Congress 2004 (Florence) - convenor symposium DWO17; co-leader field trip B26
• Symposia of IGCP Project 22: 1972, 1974, 1980;
• The John Ramsay Meeting: Zurich, 1991;
• ALCAPA Meeting Graz 1992;
• Symposium of IGCP Project 276: 1992;
• PANCARDI Symposium: Kovasna, 1994; Tulcea (1999)
• NATO Seminar on Active Faults: Athens and Peloponnessos, 1995;
• The Karamata Symposium "Terranes of Serbia": 1996, Brezovica
• Congresses of the Carpatho-Balkan Geological Association: 1963 (Poland), 1965 (Bulgaria), 1967 (Yugoslavia), 1969 (Hungary), 1989 (Bulgaria), 1995 (Greece);1998 (Austria); 2002 (Slovakia);2006 (Belgrade); 2010 (Thessaloniki)
• Penrose Conference on three-dimensional flow, Monte Verita (2002), Congresses of the Geological Society of Greece, 1992, 1994, 2001
• International Symposium on Eastern Mediterranean Geology, 2004
• ProGEO congresses and symposia: 1995 (Bulgaria), 1997 (Estonia), 1998 (Bulgaria), 2010 (Turkey)