SID AHMED, Ould Ahmed Mahmoud. Generation of analytic semigroups by a pair of generalized mixed linear regular ordinary differential operators with interface condition. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 42, p. 809–832, 2019. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/7186. Acesso em: 27 oct. 2026.