PRE-ALEXANDROFF SPACE. University of Thi-Qar Journal of Science, [S. l.], v. 3, n. 4, p. 150–155, 2013. DOI: 10.32792/utq/utjsci/v3i4.532. Disponível em: https://jsci.utq.edu.iq/index.php/main/article/view/532.. Acesso em: 8 may. 2024.