Certain Pair of Derivations on a Triangular Algebra. Communications in Mathematical Research, [S. l.], v. 30, n. 3, p. 265–272, 2021. DOI: 10.13447/j.1674-5647.2014.03.08. Disponível em: https://global-sci.com/index.php/cmr/article/view/8817. Acesso em: 5 dec. 2025.