İLHAN, Sedat. “The Article A View On Symmetric Numerical Semigroups”. Al-Qadisiyah Journal of Pure Science 26, no. 3 (June 1, 2021): Math. 1-. Accessed January 18, 2026. https://journalsc.qu.edu.iq.51-77-64-103.cpanel.site/index.php/JOPS/article/view/1303.