1. R. D. Pehlke and J. F. Elliott:Trans. TMS-AIME, 1960, vol. 218, pp. 1088–1101.
2. J. C. Humbert and J. F. Elliott:Ibid., 1960, vol. 218, pp. 1076–88.
3. T. Saito, T. Sakuma, and Y. Tsu:Unpublished research, Tohoku University, Sendai, Japan, 1964.
4. H. Schenck, M. Frohberg, and H. Graf:Arch. Eisenhuettenw., 1959, vol. 30, pp. 533–37.
5. R. G. Blossey and R. D. Pehlke:Trans. TMS-AIME, 1966, vol. 236, pp. 566–69.