Kamel Hussain, Randa, and Aseel Abdul Majeed. “Thermoplastics Polymers Friction Stir Welding: Review”. International Journal of Engineering & Technology 7, no. 4 (November 22, 2018): 4612–4616. Accessed April 29, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/21418.