1. W.M. Thomas, E.D. Nicholas, J.C. Needham, M.G. Murch, P. Temple-Smith, and C.J. Dawes:Friction Stir Butt Welding. 1991, International Patent No. PCT/GB92/02203.
2. T. Nagasawa, M. Otsuka, T. Yokota, and T. Ueki: inMagnesium Technology 2000, Minerals and Metals Society, 2000, pp. 383–87.
3. M.C. Juhas, G.B. Viswanathan, and H.L. Fraser: in2nd International Symposium on FSW (CD-ROM), Gothenburg, Sweden, 2000, TWI.
4. A.P. Reynolds, W. Tang, T. Gnaupel-Herold, and H. Prask:Scripta Mater., 2003, vol. 48 (9), pp. 1289–94.
5. W.M. Thomas, P.L. Threadgill, and E.D. Nicholas:PitSci. Technol. Weld. Joining, 1999, vol. 4 (6, p. 365.