Todorova, Martina, Nikolay Bardarov, and Evelina Georgieva. “SOME MECHANICAL PROPERTIES OF DOUGLAS-FIR WOOD FROM BULGARIA”. Innovation in Woodworking Industry and Engineering design 13, no. 1 (February 4, 2026). Accessed May 31, 2026. https://innojs.ltu.bg/index.php/scjournal-inno/article/view/306.