| Bulgaria |
|
| University of Economics - Varna |  |
| Germany |
|
| Trier University |  |
| Hungary |
|
| University of Pannonia |  |
| Portugal |
|
| University of Trás-os-Montes and Alto Douro |
|
|
The Polytechnic Institute of Viseu |
|
| Lusófona University |  |
| Universidade Lusófona do Porto |  |
| The Polytechnic of Coimbra |  |
| Universidade de Coimbra |  |
| Universidade de Lisboa |  |
| Spain |
|
| University of Huelva |  |
| University of Jaén |  |
| Florida Universitaria |  |
| Turkey |
|
| Karabuk University |  |
