Meengam, C., S. . Chainarong, and S. . Sitthipong. “Investigation of Shear Strength and Metallurgy on Semi-Solid Metal 356 Aluminium Alloy With Lap Joint by Friction Stir Spot Welding”. Engineering and Applied Science Research, vol. 49, no. 2, Sept. 2021, pp. 155-67, https://ph01.tci-thaijo.org/index.php/easr/article/view/243537.