KHAIR, F. A. .; PUTRA, A. .; M. NOR, M. J. .; SELAMAT, . M. . Analysis of sound absorption of hollow tube absorbers . International Journal of Automotive and Mechanical Engineering, [S. l.], v. 13, n. 2, p. 3492–3502, 2022. DOI: 10.15282/ijame.13.2.2016.16.0288. Disponível em: https://journal.ump.edu.my/ijame/article/view/8467. Acesso em: 14 jul. 2024.