Isam A. H. Al Zubaidi,  Low Sulfur Diesel Like Fuel Oil from Quick Remediation Process of Waste Oil Sludge.   journal   = {International Journal of Energy and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2022, vol. 192(12). 154 - 159
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10012831.