M. . S. Hameed, N. . S. Al-Zubaidi, and A. . A. Alwasiti, “Multi-Functional Enhancement of Water-Based Drilling Fluid Using Copper Nanoparticles: A Study on Lubricity, Rheology, and Filtration Properties”, ETES, vol. 2, no. 1, pp. 13–20, Mar. 2026, doi: 10.65505/ETES-25-0013.