DOMAR, Yngve. On the Ideal Structure of Certain Banach Algebras. Mathematica Scandinavica, Berkeley, CA, United States, v. 14, p. 197–212, 1964. DOI: 10.7146/math.scand.a-10719. Disponível em: https://journals.msp.org/mscand/article/view/2586. Acesso em: 25 jul. 2026.