21th session - Ljubljana, 2015




20th session - Zagreb, 2011

19th session - Zagreb, 2008


18th session - Prague, 2007
17th session - Prague, 2003
16th session - Ljubljana, 2001
15th session - Ljubljana, 1999
14th session - Budapest, 1997
13th session - Budapest, 1996
12th session - Budapest, 1993
11th session - Bratislava, 1992
10th session - Prague, 1991
9th session - Bratislava, 1989
8th session - Sofia, 1987
7th session - Sofia, 1983

6th session - Zagreb, 1982
5th session - Warsaw, 1981
4th session - Warsaw, 1979
3th session - Budapest, 1977
2th session - Budapest, 1975

1th session - Prague, 1971