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Bibiana Bukova
University of Zilina, Faculty of Operation and Economics of Transport and Communications, Department of Railway Transpor, Univerzitna 1, 010 26Zilina, Slovak Republic
Eva Brumercikova
University of Zilina, Faculty of Operation and Economics of Transport and Communications, Department of Railway Transpor, Univerzitna 1, 010 26Zilina, Slovak Republic
Lenka Cerna
University of Zilina, Faculty of Operation and Economics of Transport and Communications, Department of Railway Transpor, Univerzitna 1, 010 26Zilina, Slovak Republic
Pawel Drozdziel
Lublin University of Technology, Nadbystrzycka 38 D, 20 – 618Lublin, Poland