DAKHEL, M.G. The product of para - compact spaces. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 21, n. 1, p. 106–112, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1382. Acesso em: 14 mar. 2025.