NAOUM, A.G.; AZIZ HUSSAIN AL-ABDULLA, Raad. On paracompact Space Using Semi-Open Sets. Journal of Al-Qadisiyah for Computer Science and Mathematics, [S. l.], v. 2, n. 1, p. 14–23, 2017. Disponível em: https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/208. Acesso em: 15 nov. 2024.