Authors
Lenka Černá
University of Žilina, Department of Railway transport, Faculty of operation and economics of transport and communications, Žilina, Slovak Republic
Vladimír Klapita
University of Žilina, Department of Railway transport, Faculty of operation and economics of transport and communications, Žilina, Slovak Republic
Bibiána Buková
University of Žilina, Department of Railway transport, Faculty of operation and economics of transport and communications, Žilina, Slovak Republic