FERRANDO, J. C.; SÁNCHEZ RUIZ, L. M. On a Barrelled Space of Class $\aleph_0$ and Measure Theory. Mathematica Scandinavica, Berkeley, CA, United States, v. 71, p. 96–104, 1992. DOI: 10.7146/math.scand.a-12413. Disponível em: https://journals.msp.org/mscand/article/view/1237. Acesso em: 25 jul. 2026.