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3. H.I. Aaronson and C. Wells: Trans. AIME, 1956, vol. 206, pp. 1216-23.
4. M. Hillert: Jernkont. Ann., 1957, vol. 147, pp. 757-89.
5. T. Ko and S. A. Cottrell: J. Iron. Steel Inst., 1952, vol. 172, pp. 307-13.