JABBAR, N .A.; NASIR, A. I. Some Types of Compactness in Bitopological Spaces. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 23, n. 1, p. 321–328, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/1000. Acesso em: 30 mar. 2025.