1. L. C. Blayden and K. J. Brondyke:Light metals 1973, A. V. Clack, ed., sponsored by Light Metals Committee, Extractive Metals Division, The Metallurgical Society of AIME, vol. 2, p. 493.
2. M. V. Brant, D. C. Bone, and E. F. Emley:J. of Metals, March 1971, vol. 23, p. 48.
3. A.G. Szekely:Metall. Trans. B, 1976, vol. 17B, p. 259.
4. C.J. Simensen:Metall. Trans. B, 1981, vol. 12B, p. 733.
5. C.J. Simensen and G. Merk:Aluminium, 1980, vol. 56, p. 335.