WASET
    Esther T. Akinlabi and  Stephen A. Akinlabi,  Friction Stir Welding Process: A Green Technology.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2012, vol. 71(11). 2514 - 2516
    [viewed 10 May 2024]. Available from: https://publications.waset.org/pdf/1211.