MOTLAGH, A. N.; MOSLEHIAN, M. S.; KHOSRAVI, M. Vanishing of the first $(\sigma, \tau)$-cohomology group of triangular Banach algebras. Methods of Functional Analysis and Topology, [S. l.], v. 14, n. 4, p. 351–360, 2008. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/398. Acesso em: 16 dec. 2025.