Authors
Milan Škorupa
Faculty of Operation and Economics of Transport and Communications, University of Žilina, Žilina, Slovakia
Tomáš Čechovič
tomas.cechovic@fpedas.uniza.sk
Faculty of Operation and Economics of Transport and Communications, University of Žilina, Žilina, Slovakia
Martin Kendra
Faculty of Operation and Economics of Transport and Communications, University of Žilina, Žilina, Slovakia