Region
United States
64
États-Unis
31
Edinburgh
6
European Economic Community countries
5
Bertinoro
4
Dagstuhl
4
Grenoble
4
Barcelona
3
Budapest
3
Lissabon
3
Málaga <2010>
3
Potsdam
3
Amsterdam
2
Baltic States
2
Barcelona (2004)
2
Bilbao
2
Bombay <1993>
2
Boston (Mass., 2004)
2
Brazil
2
Chicago (Ill.)
2
Cuba
2
Dagstuhl <1992>
2
Delhi
2
Delhi <1992>
2
Edinburgh (2005)
2
European Union countries
2
Genua
2
Germany
2
Haifa <2009>
2
Kopenhagen
2
Las Palmas de Gran Canaria
2
Madras <1994>
2
Montpellier
2
Oulu
2
Pays de l'Union européenne
2
San Diego (Calif.)
2
San Francisco (Calif.)
2
Sendai
2
Sheffield
2
Toronto
2
Trient
2
Twente
2
Vancouver (British Columbia)
2
Wien
2
Zürich
2
Allemagne
1
Amsterdam <2010>
1
Austin (Tex.)
1
Austin <Tex., 2002>
1
Balti államok
1
more ...