GENCHEV, Yancho; LULCHEV, Teodor; HRISTODOROVA, Desislava. INFLUENCE OF THE TYPE OF UPHOLSTERY MATERIALS ON THE SOFTNESS OF UPHOLSTERY WITH INNER SPRING UNITS. Innovation in Woodworking Industry and Engineering design, [S. l.], v. 5, n. 1, 2016. Disponível em: http://innojs.ltu.bg/index.php/scjournal-inno/article/view/203. Acesso em: 14 apr. 2026.