- Vasil Levski National Military University Националeн военен университет “Васил Левски Veliko Tarnovo (Bulgaria)
- Varna University of Management Висше училище по мениджмънт Dobrich (Bulgaria)
- Varna Medical University "prof. dr. Paraskev Stoyanov" Медицински университет "проф. д-р Параскев Стоянов" Varna (Bulgaria)
- Varna Free University "Chernorizets Hrabar" Варненски свободен университет "Черноризец Храбър" Varna (Bulgaria)
- University of Zaragoza Universidad de Zaragoza Zaragoza (Spain)
- University of Telecommunications and Post Висше училище по телекомуникации и пощи Sofia (Bulgaria)
- University of Szeged Szegedi Tudományegyetem (SZTE) Szeged (Hungary)
- University of Pécs Pécsi Tudományegyetem (PTE) Pécs (Hungary)
- University of Nicosia Πανεπιστήμιο Λευκωσίας Nicosia (Cyprus)
- University of National and World Economy Университет за национално и световно стопанство Sofia (Bulgaria)
- University of Lleida, School of Agrifood and Forestry Science and Engineering (ETSEA) Escola Tècnica Superior d'Enginyeria Agrària Lleida (Spain)
- University of Lleida, Faculty of Law, Economics and Tourism Facultat de Dret, Economia i Turisme Lleida (Spain)
- University of Food Technologies – Plovdiv Университетът по хранителни технологии Plovdiv (Bulgaria)
- University of Economics - Varna Икономически университет - Варна Varna (Bulgaria)
- University of Debrecen Debreceni Egyetem (DE) Debrecen (Hungary)
- University of Cyprus Πανεπιστήμιο Κύπρου Nicosia (Cyprus)
- University of Chemical Technology and Metallurgy Химикотехнологичен и металургичен университет Sofia (Bulgaria)
- University of Barcelona, Faculty of Mathematics and Computer Science Facultat de Matemàtiques i Informàtica Barcelona (Spain)
- University of Barcelona, Faculty of Law Facultat de Dret Barcelona (Spain)
- University of Barcelona, Faculty of Education Facultat d'Educació Barcelona (Spain)