M. Abdul-Jabbar, Abdullah, and عبد. “A Generalization of A Contra Pre Semi-Open Maps”. AL-Rafidain Journal of Computer Sciences and Mathematics 3, no. 2 (June 25, 2025): 59–68. Accessed August 5, 2025. https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19347.