عدنان ظريف; سليمان محمود; مروه شلاح. Study of the Structure of Bitopological spaces. Tishreen University Journal -Basic Sciences Series, [S. l.], v. 44, n. 2, p. 161–170, 2022. Disponível em: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/12729. Acesso em: 3 may. 2024.