Mohammed, Esmail, Moataz Nashwan, Akram Abdalkarim, Sami Al-Naqeed, Niyazi A. S. Al-Areqi, و Sameh A. S. Alariqi. "Valorization of Spent Engine Oil As a Sustainable Polyol Substituent in Flexible Polyurethane Foam Synthesis: A Comparative Study of Starch and Natural Zeolite Filler Systems". مجـلـة جـامـعـة السـعيد للعلـوم التطبيقية 9, no. 2 (سبتمبر 3, 2026): 33–51. تاريخ الوصول سبتمبر 8, 2026. https://journal.alsaeeduni.edu.ye/index.php/SJAS/article/view/330.