CIESZKO, M. Acoustical properties of porous layer – undeformable halfspace system at normal incidence of harmonic wave. Archives of Acoustics, [S. l.], v. 17, n. 2, p. 261–276, 1992. Disponível em: https://acoustics.ippt.gov.pl/index.php/aa/article/view/1187. Acesso em: 4 mar. 2026.