Authors
Eva Popardovská
Armed Forces Academy of gen. M.R. Štefánik, Department of Mechanical Engineering, Litptovský Mikuláš, Slovakia
Vladimír Popardovský
Armed Forces Academy of gen. M.R. Štefánik, Department of Mechanical Engineering, Litptovský Mikuláš, Slovakia
Ján Danko
Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering, , Institute of Transport Technology and Engineering Design, Bratislava, Slovakia