Al-jarrah, J. A., Ibrahim, A. and Sawlaha, S. (2017) “Effect of Applied Pressure on the Mechanical Properties of 6061 Aluminum Alloy Welded Joints Prepared by Friction Stir Welding”, Engineering, Technology & Applied Science Research. Greece, 7(3), pp. 1619–1622. doi: 10.48084/etasr.1124.