1. Yuh Jet al: ?Heat transfer and thermomechanical analysis of friction stir joining of AA6061-T6 plates?. 1st International Symposium on Friction Stir Welding, Thousand Oaks, CA, USA, June 1999 , 14 ?16.
2. Dong Ret al: ?Analysis of weld formation in friction stir welding?. ibid.
3. Aota Ket al: ?Heat input and mechanical properties in friction stir welding?. 3rd International Symposium on Friction Stir Welding, Kobe, Japan, September 2001 , 27 ?28.
4. Johnson Ret al: ?Forces in friction stir welding of aluminium alloys?. ibid.
5. Shinoda Tet al: ?Effect of tool angle on metal flow phenomenon in friction stir welds?.ibid.