EDELSTEIN, Michael. Hyperplanes and Lines Associated with Families of Compact Sets in Locally Convex Spaces. Mathematica Scandinavica, Berkeley, CA, United States, v. 25, p. 25–30, 1969. DOI: 10.7146/math.scand.a-10937. Disponível em: https://journals.msp.org/mscand/article/view/2401. Acesso em: 25 jul. 2026.