Authors
Ján Dižo
University of Žilina, Department of Transport and Handling Machines, Žilina, Slovakia
Miroslav Blatnický
miroslav.blatnicky@fstroj.uniza.sk
University of Žilina, Department of Transport and Handling Machines, Žilina, Slovakia
Michal Karľa
University of Žilina, Department of Transport and Handling Machines, Žilina, Slovakia