1. Wood Science and Engineering, Department of Engineering Sciences and Mathematics, Luleå University of Technology, Forskargatan 1, SE-931 77 Skellefteå, Sweden
2. Faculty of Materials Science and Technology, Slovak University of Technology, Vazovova 5, SK-811 07 Bratislava, Slovakia
3. Lab of Wood Science and Technology, University of Thessaly, Griva 11, GR-43100 Karditsa, Greece
4. Department of Wood Processing and Biomaterials, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcḱ 1176, Praha 6 - Suchdol CZ-16521, Czech Republic