COPS, A.; LAURIKS, W. Characterization of sound absorbing materials used in noise control engineering. Archives of Acoustics, [S. l.], v. 18, n. 2, p. 209–248, 2014. Disponível em: https://acoustics.ippt.pan.pl/index.php/aa/article/view/1142. Acesso em: 15 jun. 2025.