VASILESCU, F.-H. Spaces of fractions and positive functionals. MATHEMATICA SCANDINAVICA, [S. l.], v. 96, n. 2, p. 257–279, 2005. DOI: 10.7146/math.scand.a-14956. Disponível em: https://www.mscand.dk/article/view/14956. Acesso em: 11 apr. 2025.