1. W.M. Thomas, E.D. Nicholas, J.C. Needham, M.G. Murch, P. Temple-Smith, C.J. Dawes, Friction stir butt welding, Int. Patent Application no. PCT/GB92/02203; GB Patent Application no. 9,125,978.8, 1991; US Patent no. 5,460,317, 1995.
2. W.M. Thomas, E.D. Nicholas, J.C. Needham, M.G. Murch, P. Temple-Smith, C.J. Dawes, Improvements relating to friction welding, International Patent Classifications B23K 20/12, B29C 65/06, 1993.
3. Modelling of friction stir welding;Shercliff,2002
4. C.J. Dawes, P.L. Threadgill, E.J.R. Spurgin, D.G. Staines, Development of the new friction stir technique for welding aluminium, TWI Group Sponsored Report no.: 5651/35/95, Cambridge, UK, 1995.
5. An experimentally validated 3D model for friction stir welding;Bendzsak,2000