“Improving The Tribological Characteristics of In-House Made Acid-Activated Iraqi Bentonite Lubricating Greases Using Graphite and Polytetrafluoroethylene Nanoplatelets As Additives”. Diyala Journal of Engineering Sciences , vol. 18, no. 1, Mar. 2025, pp. 219-36, https://doi.org/10.24237/djes.2025.18113.