1. 1 Slovak University of Agriculture in Nitra, Faculty of Engineering , Institute of Agricultural Engineering, Transportand Bioenergetics , Nitra , Slovakia
2. 2 Slovak University of Agriculture in Nitra, Faculty of Engineering , Institute of Design and Engineering Technologies , Nitra , Slovakia
3. 3 Cyclone Manufacturing Inc , Mississauga, Ontario , Canada
4. 4 University of Agriculture in Krakow, Faculty of Production and Power Engineering , Division of Mechanisation and Energy Technologies in Agriculture , Krakow , Poland
5. 5 Czestochowa University of Technology , Department of Production Engineering and Safety , Poland