XXI Congress 2025, Ruse, Bulgaria

11 - 14 September 2025

Announcement | Program | Registration Form | Participants

• XX Congress 2021 Chartres, France
• XIX Congress 2017 in Mainz, Germany
• XVIII Congress 2013 Saariselkä, Finland
• XVII Congress 2009 Jedlnia Poland
• XVI Congress 2005 Freising, Germany
• XV Congress 2001 Pitesti, Romania
• XIV Congress 1998 Punkaharju, Finland
• XIII Congress 1995 Gdansk, Poland
• XII Congress 1992 Florence and Rome, Italy
• XI Congress 1988 Nîmes and Nancy, France
• X Congress 1985 Athens, Greece
• IX Congress 1982 Edinburgh, Scotland UK
• VIII Congress 1979 Freiburg, Germany
• VII Congress 1976 Wageningen, Netherland
• VI Congress 1973 Florence and Roma, Italy
• V Congress 1970 Helsingör, Denmark
• IV Congress 1967 Paris, France
• III Congress 1965 Essen and Berlin, Germany
• II Congress 1962 Silkeborg, Denmark
• I Congress 1958 Brussels, Belgium