Sadiq, Fatema A., and Shatha A. Salman. “Unimodality for the Free Sum and Product of Reflexive and Birkhoff Polytopes”. Journal of Al-Qadisiyah for Computer Science and Mathematics 14, no. 2 (June 4, 2022): Math Page 1–8. Accessed December 22, 2024. https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/936.