EL-MONSEF, M. E. A.; LASHIEN, E. F.; NASEF, A. A. REMARKS ON THE *- TOPOLOGY. Tamkang Journal of Mathematics, [S. l.], v. 24, n. 1, p. 9–22, 1993. DOI: 10.5556/j.tkjm.24.1993.4467. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4467. Acesso em: 6 may. 2024.