EREES, Alaa. Pre-connected sets in Bitopological Spaces. University of Thi-Qar Journal of Science, University of Thi-Qar, Thi-Qar, Iraq, v. 1, n. 1, p. 43–47, 2008. Disponível em: https://jsci.utq.edu.iq/index.php/main/article/view/316.. Acesso em: 31 mar. 2025.