Grigorov, Rosen, and Viktor Savov. (2026) 2026. “MECHANICAL PROPERTIES OF THREE-LAYERED PARTICLEBOARDS WITH FACE LAYERS OF BEECH AND OAK PARTICLES AND A CORE LAYER OF CONIFER AND SUNFLOWER STALKS PARTICLES”. Innovation in Woodworking Industry and Engineering Design 12 (2). https://doi.org/10.66211/inno.2023.2.369.