1. Institute of Applied Informatics and Logistics, University of Debrecen, Debrecen, Hungary; Ho Chi Minh City University of Technology-VNU, Ho Chi Minh City, Vietnam
2. Management Department, Faculty of Applied Sciences, WSB University, 41-300 Dabrowa Górnicza, Poland
3. Faculty of Economics and Business, Institute of Applied Informatics and Logistics, University of Debrecen, 4028 Debrecen, Hungary