DATA ENVELOPMENT ANALYSIS OF FACTORS FOR FOREST INDUSTRY WAGES AND SALARIES LEVELS IN NUTS 2 REGIONS OF BULGARIA. Innovation in Woodworking Industry and Engineering design, [S. l.], v. 12, n. 1, 2026. Disponível em: http://innojs.ltu.bg/index.php/scjournal-inno/article/view/350. Acesso em: 25 feb. 2026.