[1] Univ Debrecen, Inst Appl Informat & Logist, Fac Econ & Business, H-4032 Debrecen, Hungary
[2] Univ Debrecen, Karoly Ihrig Doctoral Sch Management & Business, H-4032 Debrecen, Hungary
[3] Univ Debrecen, Oncol Inst, Fac Med, H-4032 Debrecen, Hungary
[4] Univ Debrecen, Inst Sectoral Econ & Methodol, Fac Econ & Business, H-4032 Debrecen, Hungary