University of Hamburg
Europe : Germany
- Africa : TunisiaEurope : Germany
- America : United States (South East)
- Indian Institute of Science Campus, BangaloreAsia : India
- Europe : Romania
- Norwegian Academy of Sciences and LettersEurope : Norway
- University of Notre DameAmerica : United States (Great Lakes)
- University of British ColumbiaAmerica : Canada
- Europe : Poland
- America : United States (Mid-Atlantic)