1. Catholic University of Louvain, Belgium
2. National Fund for Scientific Research, Belgium
3. Arizona State University, USA
4. Indiana University South Bend, USA
5. Slovak Academy of Sciences, Slovakia
6. University of Lausanne, Switzerland
7. Yıldırım Beyazıt University, Turkey
8. National Taiwan University, Taipei
9. University of Turin, Italy
10. National and Kapodistrian University of Athens, Greece
11. University of Granada, Spain
12. University of Marburg, Germany
13. University of Nantes, France
14. University of Costa Rica, Costa Rica