WU, M.; PAIGE, T.; ALLEN, D. Optimum positioning of duct silencers in sound-rated construction. Canadian Acoustics, [S. l.], v. 19, n. 4, p. 13–13, 1991. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/646. Acesso em: 23 oct. 2021.