Multivalued fixed point theorems in cone metric spaces over Banach algebras. Gulf Journal of Mathematics, [S. l.], v. 14, n. 2, p. 68–76, 2023. DOI: 10.56947/gjom.v14i2.961. Disponível em: https://www.gjom.org/index.php/gjom/article/view/961. Acesso em: 21 aug. 2026.