K. Oyedemi, P. McGrath, H. Lombard, and B. Varbai, “A Comparative Study of Tool-Pin Profile on Process Response of Friction Stir Welding of AA6082-T6 Aluminium Alloy”, Period. Polytech. Mech. Eng., vol. 61, no. 4, pp. 296–302, Jan. 2017.