Paligorov, Ivan, and Emil Galev. “SOME RESULTS OF FOREST ECOSYSTEM SERVICES MODEL ON THE TERRITORY OF YUNDOLA AND TETEVEN”. Innovation in Woodworking Industry and Engineering design 3, no. 1 (May 20, 2014). Accessed May 31, 2026. https://innojs.ltu.bg/index.php/scjournal-inno/article/view/115.