Unbounded generalized B-Fredholm operators. Extracta Mathematicae, [S. l.], v. 39, n. 1, p. 37–46, 2024. DOI: 10.17398/2605-5686.39.1.37. Disponível em: https://revista-em.unex.es/index.php/EM/article/view/2605-5686.39.1.37.. Acesso em: 15 oct. 2024.