HUSSAIN, T.; AHMAD, F. Existence of zero-group velocity modes in an incompressible plate. Archives of Mechanics, Warsaw, Poland, v. 66, n. 1, p. 55–65, 2014. Disponível em: https://am.ippt.pan.pl/index.php/am/article/view/v66p55. Acesso em: 12 dec. 2025.