1. D. Lee:Proc. the 3rd Int. Conference on the Strength of Metals and Alloys, vol. 1, p. 276, Cambridge, England, 1973.
2. See for example, W. D. Coolidge:Trans. Amer. Inst. Elec. Eng., 1910, vol. 29, p. 961.
3. S. Leber:Trans. ASM, 1961, vol. 53, p. 697.
4. J. F. Peck and D. A. Thomas:Trans. Met. Soc. AIME, 1961, vol. 221, p. 1240.
5. W. F. Hosford:Trans. Met. Soc. AIME, 1964, vol. 230, p. 12.