University of Maryland - USA
Universita di Perugia - Italy
N. T. University of Athens - Greece
CSIC - Spain
University of Arizona - USA
Universite du Havre - France
Università di Chieti, Chieti - Italy
Nicolaus C. University - Poland
University College London - UK
Boğaziçi University - Turkey
Koç University - Turkey
Bilkent University - Turkey
ITU - Turkey