1. Department of Wood-Based Composites, Cellulose and Paper, Ukrainian National Forestry University, 79057 Lviv, Ukraine
2. Department of Wood Science and Technology, Mendel University in Brno, 613 00 Brno, Czech Republic
3. Department of Furniture and Wood Products, Technical University in Zvolen, 960 01 Zvolen, Slovakia
4. Department of Wood Science and Thermal Technics, Poznań University of Life Sciences, 60-627 Poznań, Poland