1. Department of Machinery Utilization, Faculty of Engineering, Czech University of Life Sciences Prague, 165 00 Prague, Czech Republic
2. Department of Agricultural Machines, Faculty of Engineering, Czech University of Life Sciences Prague, 165 00 Prague, Czech Republic
3. Department of Technology and Cybernetics, Faculty of Agriculture and Technology, University of South Bohemia, 370 05 Ceske Budejovice, Czech Republic
4. Research Institute of Agricultural Engineering, 161 01 Prague, Czech Republic