1. Thomas WM, Nicholas ED, Needham JC, Murch MG, Temple-Smith P, Dawes CJ. Friction Stir Butt Welding, International Patent Application No. PCT/GB92/02203, GB Patent Application No. 9125978.8 (1991), US Patent No. 5,460,317.1995.
2. Midling OT, Morley E, Kluken AO. Joining of aluminium constructions by friction stir welding, new and alternative materials for the transportation industries. In: Proceedings of the 27th international symposium on automotive technology and automation, Aachen, Germany, October 31–November 4; 1994.
3. Friction stir process welds aluminium alloys;Dawes;Weld J,1996
4. Leonard AJ. Microstructure and ageing behaviour of FSWs in aluminium alloys 2014A-T651 and 7075-T651. In: Second international symposium on friction stir welding, Gothenburg, Sweden, June 26–28; 2000.
5. Linton VM, Renc S, Brown IH. Investigation of properties of friction stir welds in agehardenable 7xxx aluminium alloys. In: Seventh international conference on trends in welding research, Pine Mountain, Georgia, USA. May 16–20; 2005.