1. Slovak University of Agriculture in Nitra, Faculty of Engineering Institute of Agricultural Engineering, Transport and Bioenergetics Nitra , Slovakia
2. Bydgoszcz University of Science and Technology, Faculty of Mechanical Engineering Department of Mechatronics and Work Machines Bydgoszcz , Poland
3. Bydgoszcz University of Science and Technology, Faculty of Mechanical Engineering Department of Machine Operation and Transport Bydgoszcz , Poland