CAVIGLIA, G.; MORRO, A. Existence and uniqueness of the solution in the frequency domain for the reflection-transmission problem in a viscoelastic layer. Archives of Mechanics, Warsaw, Poland, v. 56, n. 1, p. 59–82, 2004. Disponível em: http://am.ippt.gov.pl/index.php/am/article/view/v56p59. Acesso em: 17 jan. 2026.