1. Faculty of Mechanical Engineering, Brno University of Technology, 616 00 Brno, Czech Republic
2. Department of Mechanical Engineering, Faculty of Military Technology, University of Defence in Brno, 602 00 Brno, Czech Republic
3. Department of Engineering, Faculty of Special Technology, Alexander Dubcek University of Trencin, Pri Parku 19, 911 06 Trenčín, Slovakia