BAYOUMI, Aboubakr. The Levi problem in non-locally convex seperable topological vector spaces. Mathematica Scandinavica, Berkeley, CA, United States, v. 67, p. 290–298, 1990. DOI: 10.7146/math.scand.a-12339. Disponível em: https://journals.msp.org/mscand/article/view/1340. Acesso em: 24 jul. 2026.