PUTO, D.; KOTARBIŃSKA, E. Measurements of acoustics properties for level-dependent ear-muffs. Archives of Acoustics, [S. l.], v. 28, n. 1, 2003. Disponível em: https://acoustics.ippt.pan.pl/index.php/aa/article/view/441. Acesso em: 2 jul. 2025.