1. Department of Mechanical Wood Technology, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, 60-637 Poznań, Poland
2. Euroline sp. z o.o., 64-100 Leszno, Poland
3. Department of Law and Organization of Agribusiness Enterprises, Faculty of Economics, Poznań University of Life Sciences, 60-637 Poznań, Poland
4. Department of Woodworking and Fundamentals of Machine Design, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, 60-637 Poznań, Poland