Kumar, Rajiv Ranjian. “Effect on Tool Design and Heat Input of Some Welding Parameters in Friction Stir Welded Interstitial Free Steels”. International Journal of Engineering and Technology Innovation 8, no. 1 (January 1, 2018): 64-75. Accessed October 25, 2021. https://ojs.imeti.org/index.php/IJETI/article/view/489.