1. Department of Economics, Aristotle University of Thessaloniki, Thessaloniki, Greece
2. School of Business, Konkuk University, Seoul 05029, South Korea
3. School of Engineering, Master of Engineering Management, Nazarbayev University, Astana 010000, Kazakhstan
4. Department of Industrial and Systems Engineering, University of Wisconsin, Madison, WI 53706, USA
5. Enterprise Research Centre, School of Engineering, University of Limerick, Limerick, Ireland