1. M.W.Thomas, J.Nicholas, J.C.Needham, M.G.Murch, P.Templesmith, C.J.Dawes, US Patent, 5, 460, 317 (24 Oct 1995)
2. W. M. Thomas, “Friction stir welding and related friction process characteristics”, in Proc. 7th Jnternational Conference Joints in Aluminium (JNALCO’ 98) (1998), pp. 1–18.
3. T.Nishihara, Japanese Patent No. 4, 646, 421 (11 Sept 2002).
4. Development of Friction Stir Forming
5. Effect of Difference of Tool Rotation Direction on Forming Limit in Friction Stir Incremental Forming