Toronto,
Canada
1988

Austin,
TX, USA
1989

Brno,
Czechoslovakia
1990

Baltimore,
MD, USA
1991

Inuyama,
Japan
1992

Crete,
Greece
1993

Les Diablerets,
Switzerland
1994

Sanibel Island,
FL, USA
1995

Oxford,
UK
1996

Toronto,
Canada
1997

Santa Margherita,
Italy
1998

La Rochelle,
France
1999
 Pittsburgh,
PA, USA
2000
 Nagoya,
Japan
2001
Univ. Twente
The Netherlands
2002
Baltimore,
MD, USA
2003
Heidelberg,
Germany
2004

Sheffield,
UK
2005

Oak Ridge,
TN, USA
2006

Crete,
Greece
2007
Wilmington,
DE, USA
2008
Zlin,
Czech Republic
2009
Pohang,
Rep. of Korea
2010
Torino,
Italy
2011
 
Kerkrade,
The Netherlands
2012