Abdulridha LA, Hameed TM, Khudhair MM, Ghadeer SK. Impact of Nano-Gel of titanium dioxide Additive on Base Oil Properties Produced in Iraqi Refineries. Iraqi Journal of Science. Published online April 18, 2019:75-83. Accessed December 5, 2025. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/687