MIT, University of Washington, Stanford University, University of California (Irvine), École Normale Supérieure (Paris, France), Université Paris-Est Créteil (France), University of Paris VII (France), University College London (England), University of Helsinki (Finland), University of Vienna (Austria), University of Rome “La Sapienza” (Italy), University of Florence (Italy), Norwegian University of Science and Technology (Norway), Lund University (Sweden), University of Chinese Academy of Sciences (Beijing, China)
State University of Campinas (Brazil), Federal University of Bahia (Brazil), University of Antioquia (Colombia), University of the South Pacific (Fiji)
