Mohammed, Abdulrahman A., and Laith K. Shaakir. “Partial Modular Space”. Journal of Al-Qadisiyah for Computer Science and Mathematics 13, no. 2 (May 7, 2021): Math Page 1– 13. Accessed November 14, 2024. https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/789.