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2. T. S. Ke: Trans. AIME (1948) 176, p. 448; Metals Technology (June 1948).
3. A. Josefsson and E. Kula: Trans. AIME (1952) 194, p. 161; Journal of Metals (April 1952).
4. A. Hultgren: Trans. ASM (1947) 39, p. 915.
5. C. Zener: Trans_ AIME (1946) 167, p. 513; Metals Technology (January 1946).