1. Faculty of Economic Sciences, Spiru Haret University, 030045 Bucharest, Romania
2. Faculty of Veterinary Medicine, Spiru Haret University, 030352 Bucharest, Romania
3. Faculty of Management and Rural Development, University of Agricultural Sciences and Veterinary Medicine, 011464 Bucharest, Romania
4. Doctoral School, National University of Physical Education and Sport, 060057 Bucharest, Romania
5. Faculty of Economic Sciences, Petroleum-Gas University of Ploiesti, 100680 Ploiesti, Romania
6. Faculty of Economy and International Affairs, Academy of Economic Studies, 010374 Bucharest, Romania