1. Doctoral School of Management and Business Administration, Szent Istvan University, Godollo, Hungary
2. Faculty of Management and Accounting, Department of Management, Allameh Tabatabai University, Tehran, Iran
3. Faculty of Management and Accounting, Department of Management, Tehran University, Tehran, Iran
4. Faculty of Civil Engineering, Technische Universität Dresden, Dresden, Germany
5. Norwegian University of Life Sciences, Norway
6. Obuda University, BudapestBudapest, Hungary