2024, Ljubljana, Slovenia

(Check regularly for updates)

2022, Heraklion, Crete
2019, Riga, Latvia
2017, Erlangen, Germany
2015, Sendai, Japan
2013, Winchester, UK
2011, Kongsberg, Norway
2009, Braga, Portugal
2007, Belém, Brazil
2005, Lyon, France
2003, Seattle, USA
2001, Cambridge, UK
1999, Göttingen, Germany
1997, Ghent, Belgium
1995, Pau, France 

1993, Tübingen, Germany
1991, Sydney, Australia
1989, Calgliari, Italy
1987, Annapolis, USA
1985, Avignon, France
1983, Geneva, Switzerland
1981, Berlin, Germany
1979, Strawberry Hill, UK
1977, Parma, Italy
1975, Amsterdam-Leiden, Netherlands
1973, Edinburgh, UK
1971, Ghent, Belgium