MALTESE, G. Convex Ideals and Positive Multiplicative Forms in Partially Ordered Algebras. MATHEMATICA SCANDINAVICA, [S. l.], v. 9, p. 372–382, 1961. DOI: 10.7146/math.scand.a-10642. Disponível em: https://www.mscand.dk/article/view/10642. Acesso em: 23 nov. 2024.