WESOŁOWSKI, Z. Reflection coefficient for two elastic layers joining two homogeneous materials. Archives of Acoustics, [S. l.], v. 18, n. 4, p. 577–586, 2015. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1164. Acesso em: 25 apr. 2025.