Abbas, Fatima H., Tariq M. Naife, and Hind Barghash. “The Effect of Variable Parameters on Carbon Residue of Iraqi Vacuum Gas Oil Using Ultrasound Techniques”. Iraqi Journal of Chemical and Petroleum Engineering 24, no. 2 (June 30, 2023): 107–112. Accessed November 23, 2024. https://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/960.