1. Department of Economics, Democritus University of Thrace, 69100 Komotini, Greece
2. Knowledge Management, Innovation and Strategy Center (KISC), University of Nicosia, P.O. Box 24005, Nicosia CY-2417, Cyprus
3. School of Business, University of Nicosia, P.O. Box 24005, Nicosia CY-2417, Cyprus