1. W. A. Dean and R. E. Spear, Proc. 12th Army Materials Res. Conf., 1966: Syracuse, N.Y., p. 268.
2. M. C. Flemings, ibid., p. 268, p. 235.
3. H. Matyja, B. C. Giessen, and N. J. Grant, Jour. Inst. Metals, 96 (1968), p. 30.
4. P. Duwez and R. H. Willens, Trans. TMS-AIME, 227 (1963), p. 362.
5. P. Duwez, Trans. ASM, 60 (1967), p. 607.