Muzahim Saeed, Lubna, and Fakhrulddin H. Ali. “Evaluation of Hidden Surface Removal Methods Using Open GL”. Al-Rafidain Engineering Journal (AREJ) 26, no. 2 (October 1, 2021): 300–308. Accessed October 2, 2025. https://jcis.uomosul.edu.iq/index.php/arej/article/view/30657.