1. Thomas, W.M., E.D. Nicholas, J.C. Needham, M.G. Murch, P. Templesmith, and C.J. Dawes, G.B. Patent Application No.9125978.8, December 1991.
2. Dawes, C.J. and W. Thomas, TWI, Bulletin, 1995. 6: p. P. 124.
3. Friction stir welding of aluminium alloys;Threadgill;International Materials Reviews,2009
4. Terminology in friction stir welding;Threadgill;Science and Technology of Welding and Joining,2007
5. An investigation of hardness, microstructure and crystallographic texture in thick sectioned friction stir welded AA6082,7th International Friction Stir Welding Symposium, Awaji Island, Japan;Ahmed,2008