N. Yosifov and S. Delin, “PROGNOSIS OF MECHANICAL STABILITY OF STRUCTURAL PARTICLEBOARDS BASED ON MODIFIED PHENOL-FORMALDEHYDE RESINS DURING LONG-LASTING STAY IN THE OPEN IN REAL CLIMATIC CONDITIONS”, INNO, vol. 4, no. 2, Dec. 2015, Accessed: Apr. 14, 2026. [Online]. Available: http://innojs.ltu.bg/index.php/scjournal-inno/article/view/138