1. Department of Management Science and Technology, University of the Peloponnese, 22100 Tripoli, Greece
2. Department of Management and Marketing, Agricultural University of Plovdiv, 4000 Plovdiv, Bulgaria
3. Department of Economics and Business, Neapolis University Pafos, Pafos 8042, Cyprus
4. School of Agriculture and Food, University of Peloponnese, 22100 Tripoli, Greece