May 31, 1991
Socialist Federal Republic of Yugoslavia
May 31, 1992
Maribor
May 31, 1993
Pontoise
May 31, 1973
Ptuj
May 31, 1954
Ljubljana
May 31, 1960
Ljubljana
May 31, 2003
Radeče
May 31, 1962
Ljubljana
May 31, 1926