HUSTAD, O. A Note on Inductive Limits of Linear Spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 12, p. 163–166, 1963. DOI: 10.7146/math.scand.a-10679. Disponível em: https://www.mscand.dk/article/view/10679. Acesso em: 20 apr. 2024.