1. W.M. Thomas, E.D. Nicholas, J.C. Needham, M.G. Murch, P. Templesmith, and C.J. Dawes: G.B. Patent Application No. 9125978.8, Dec. 1991.
2. R.S. Mishra, Z.Y. Ma: Mater. Sci. Eng., R, 2005, vol. R50, pp. 1–78
3. M.W. Mahoney, C.G. Rhodes, J.G. Flintoff, R.A. Spurling, W.H. Bingel: Metall. Mater. Trans. A, 1998, vol. 29A, pp. 1955–64
4. J.Q. Su, T.W. Nelson, R. Mishra, M. Mahoney: Acta Mater., 2003, vol. 51, pp. 713–29
5. Ø. Frigaard, Ø. Grong, J. Hjelen, S. Gulbrandsen-Dahl, and O.T. Midling: Proc. 1st Int. Symp. on Friction Stir Welding, Thousand Oaks, CA, 1999, TWI, Cambridge, 1999.