TAJMOUATI, A.; AMOUCH, M.; ZAKARIYA, M.R.F. Alhomidi. Some spectral inclusion for strongly continuous semigroups operators. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 43, p. 531–543, 2020. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/7319. Acesso em: 6 nov. 2026.