Nourani, M., A. Milani, S. Yannacopoulos, and C. Yan. “An Integrated Multiphysics Model for Friction Stir Welding of 6061 Aluminum Alloy”. The International Journal of Multiphysics, vol. 8, no. 1, Mar. 2014, pp. 29-48, doi:10.1260/1750-9548.8.1.29.