MATTHES, S.; REISSIG, M. Qualitative properties of structurally damped wave models. Eurasian Mathematical Journal, [S. l.], v. 4, n. 3, p. 84–106, 2013. Disponível em: https://emj.enu.kz/index.php/main/article/view/539. Acesso em: 31 oct. 2025.