ĆWISZEWSKI, A. Forced oscillations in strongly damped beam equation. Topological Methods in Nonlinear Analysis, [S. l.], v. 37, n. 2, p. 259–282, 2011. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2011.014. Acesso em: 22 jul. 2024.