[1] Univ Forestry, Fac Forest Ind, Sofia 1797, Bulgaria
[2] Univ Teknol MARA UiTM, Fac Appl Sci, Dept Wood Ind, Cawangan Pahang Kampus Jengka, Bandar Tun Razak 26400, Pahang, Malaysia
[3] Natl Res & Innovat Agcy, Res Ctr Biomass & Bioprod, Cibinong 16911, Indonesia
[4] Natl Res & Innovat Agcy, Res Collaborat Ctr Biomass & Biorefinery BRIN & Un, Cibinong 16911, Indonesia
[5] Tech Univ Zvolen, Fac Wood Sci & Technol, Zvolen 96001, Slovakia