University La Sapienca Rome, Italy
Polytechnic Institute Of Cávado And Ave, Barcelos, Portugal
Maria Curie Sklodowska University, Poland
Polytechnic University if Management and Technology, Portugal
European Polytechnic University, Bulgaria
Dag Hammarskjöld University College of International Relations and Diplomacy, Croatia
Institute Politechnico de Guarda (IPG), Portugal
University Institute of Maia, Portugal
International Business School Botevgad, Bulgaria
Bulent Ecevit University, Turkey
Josip Juraj Strossmayer University of Osijek, Croatia
Ukoopspilka “Poltava University of Economics and Trade”, Ukraine
The D.A. Tsenov Academy of Economics, Svishtov, Bulgaria
Atasehir Adiguzel Vocational School
University of Applied Sciences BALTAZAR, Zapresic
Visoka sola za trajnostni turizem ERUDIO (ERUDIO School of Sustainable Tourism), Ljubljana
Pope John Paul II State School of Higher Education in Biala Podlaska
Vasil Levski National Military University (Natsionalen Voenen Universitet "Vasil Levski"), Bulgaria