SCHIEF, Andreas. The continuity of subtraction and the Hausdorff property in spaces of Borel measures. Mathematica Scandinavica, Berkeley, CA, United States, v. 63, p. 215–219, 1988. DOI: 10.7146/math.scand.a-12235. Disponível em: https://journals.msp.org/mscand/article/view/1433. Acesso em: 25 jul. 2026.