Malalla , Ekhlas, and Amir Mohammed. “Punctual Graph Topological Space: Expansible and Non-Expansible Cases”. Journal of Wahj Al-Ulom for Pure Sciences 1, no. 4 (August 11, 2025). Accessed September 9, 2025. https://edusj.uomosul.edu.iq/index.php/jwups/article/view/29479.