1. S. Karabay and I. Uzman: Mater. Manuf. Process., 2005, vol. 20, pp. 231–43. .
2. P.S. Cooper and M.A. Kearns: ICAA5., 1996, vol. 217, pp. 141–6. .
3. G.G. Gauthier: J. Inst. Met., 1936, vol. 59, pp. 129–50. .
4. W.A. Dean: Aluminum., 1967, vol. 1, p. 174. .
5. G. Dube: European Patent No. 0112024, 1983.