RIGOBERT, S.; ATALLA, N.; SGARD, F. Numerical modeling of porous-elastic materials using hierachical elements. Canadian Acoustics, [S. l.], v. 27, n. 3, p. 68–69, 1999. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1221. Acesso em: 26 nov. 2022.