Institute of Production Engineering, Faculty of Management, Częstochowa University of Technology Al. Armii Krajowej 19B, 42-200 Częstochowa, Poland
Renata Stasiak-Betlejewska
Institute of Production Engineering, Faculty of Management, Częstochowa University of Technology Al. Armii Krajowej 19B, 42-200 Częstochowa, Poland
Adam Torok
Budapest Univeristy of Technology and Economics, Department of Transport Economics, Faculty of Transport Engineering and Vehicle Engineering Stoczek u. 2. 1111 Budapest, Hungary