PANASYUK, S.P.; SULTANOV, S.R. On the problem of the Dieudonne completeness of the spaces of closed subspaces and subgroups . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 11, p. 1525–1529, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8255. Acesso em: 7 apr. 2025.