1. University of Padua, Padova , Italy
2. University of Padua, Padova, Italy
3. Université Grenoble Alpes, Saint-Martin-d'Hères, France
4. National Distance Education University (UNED), Madrid, Spain
5. Dublin City University, Dublin, Ireland
6. Maynooth University, Kildare, Ireland
7. Trinity College Dublin, Dublin, Ireland
8. University of Hildesheim, Hildesheim, Germany