1. Institute for Economics and Management, Károli Gáspár University of the Reformed Church in Hungary, Budapest, Hungary
2. Institute for Economics, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary
3. InnovITech Co, Budapest, Hungary
4. Institute for Sociology, University of Miskolc, Miskolc, Hungary
5. Department of Management, J. Selye University, Komárno, Slovakia