SCHIEF, A. The continuity of subtraction and the Hausdorff property in spaces of Borel measures. MATHEMATICA SCANDINAVICA, [S. l.], v. 63, p. 215–219, 1988. DOI: 10.7146/math.scand.a-12235. Disponível em: https://www.mscand.dk/article/view/12235. Acesso em: 5 may. 2024.