R. Mohammed Hussein, S. Fareed Hasan, A. M. Takhakh, and M. Abdullah Al-Shammari, “Optimization of Friction Stir Spot Welding Parameters of Al6061T6 by Hybrid Approached”, NJES, vol. 26, no. 2, pp. 131–137, Jul. 2023, doi: 10.29194/NJES.26020131.