Khaiarallha Al’Dzhabri, Khalid Shea, Abedal-Hamza Mahdi Hamza, and Yousif Saheb Eissa. 2020. “On DG- Topological Operators Associated With Digraphs”. Journal of Al-Qadisiyah for Computer Science and Mathematics 12 (1):Math Page 60 – 71. https://doi.org/10.29304/jqcm.2020.12.1.668.