EDELSTEIN, M. Hyperplanes and Lines Associated with Families of Compact Sets in Locally Convex Spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 25, p. 25–30, 1969. DOI: 10.7146/math.scand.a-10937. Disponível em: https://www.mscand.dk/article/view/10937. Acesso em: 5 may. 2024.