1 School of Management and Economics, Beijing Institute of Technology, Beijing, China.
2 Alma Mater Europaea ECM, Maribor, Slovenia.
3 Department of Computing and Informatics, Bournemouth University, Poole, UK.
4 Faculty of Economics Administrative and Social Sciences, Department of International Logistics and Transportation, Istanbul Gelisim University, Istanbul, Turkey. fbekun@gelisim.edu.tr.