1. W.M. Thomas, E.D. Nicholas, J.C. Needham, M.G. Murch, P. Templesmith, and C.J. Dawes, 1991. International Patent Application No. PCT/GB92/02203 and GB Patent Application No. 9125978.8. https://patents.google.com/patent/US5460317A/en.
2. Friction stir welding and processing;Mishra;Materials Science and Engineering: R: Reports,2005
3. Recent progress on control strategies for inherent issues in friction stir welding;Meng;Prog. Mater Sci.,2021
4. Fracture toughness of friction hydro-pillar processing welding in C–Mn steel;Chludzinski;Mater. Des.,2012
5. AA7075 bit for repairing AA2219 keyhole by filling friction stir welding;Han;Mater. Des.,2013