BRENNAN, J. P.; VASCONCELOS, W. V. On the structure of closed ideals. MATHEMATICA SCANDINAVICA, [S. l.], v. 88, n. 1, p. 3–16, 2001. DOI: 10.7146/math.scand.a-14311. Disponível em: https://www.mscand.dk/article/view/14311. Acesso em: 23 nov. 2024.