-
Tsukuba, Japan, 1–6 August 2010
-
Warsaw, Poland, 3–8 August 2008
-
Boulder, CO, USA, 30 July–4 August 2006
-
Beijing, China, 17–21 August 2004
-
Rostock, Germany, 28 July–2 August 2002
-
Halifax, Nova Scotia, Canada, 6–11 August 2000
-
Porto, Portugal, 26 July–1 August 1998
-
Toyonaka, Osaka, Japan, 25–30 August 1996
-
Clermont-Ferrand, France, 17–22 July 1994
-
Snowbird, Utah, USA, 16–21 August 1992
-
Como, Italy, 26–31 August 1990
-
Prague, Czechoslovakia, 29 August–2 September 1988
-
Lisbon, Portugal, 14–18 July 1986
-
London, UK, 6–10 September 1982
-
Montpellier, France, 26–30 August 1975
-
Baden bei Wien, Austria, 3–7 September 1973
-
Cardiff, UK, 1–4 April 1970
-
Lund, Sweden, 18–23 July 1963