1. Department for Innovation, Business Economics and Business Sectors, The Institute of Economics, Zagreb, Zagreb, Croatia
2. Marketing Department, Faculty of Economics-Skopje, Ss. Cyril and Methodius University in Skopje, Skopje, Macedonia
3. Marketing Department, Faculty of Economics and Business, University of Zagreb, Zagreb, Croatia
4. Marketing Department, Faculty of Economics; Matice hrvatske bb, University of Mostar, Mostar, Bosnia and Herzegovina