ZAITOV, A. A. The density and cellularity of the spaces of signed measures and probabilirty measures. Methods of Functional Analysis and Topology, [S. l.], v. 8, n. 3, p. 85–89, 2002. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/195. Acesso em: 18 dec. 2025.