E. Voulgaridis, G. Blaskova, and C. Passialis, “STRUCTURE AND PROPERTIES OF FIR (ABIES BORISII – REGIS MATTF.) AND SPRUCE (PICEA EXCELSA LINK) AND THEIR INFLUENCE ON WOΟD IMPREGNABILITY*”, INNO, vol. 3, no. 2, Dec. 2014, Accessed: Apr. 15, 2026. [Online]. Available: http://innojs.ltu.bg/index.php/scjournal-inno/article/view/178