TROCHIDIS, A.; PAPANIKOLAOU, G. The use of Helmholtz resonators and panel absorbers in the design of duct silencers. Archives of Acoustics, [S. l.], v. 18, n. 3, p. 435–446, 1993. Disponível em: https://acoustics.ippt.gov.pl/index.php/aa/article/view/1154. Acesso em: 4 mar. 2026.