CARVALHO, A. N.; BORTOLAN, M. C. Strongly damped wave equation and its Yosida approximations. Topological Methods in Nonlinear Analysis, [S. l.], v. 46, n. 2, p. 563–602, 2015. DOI: 10.12775/TMNA.2015.059. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2015.059. Acesso em: 19 jan. 2022.