1. See C. S. Barrett and T. B. Massalski:Structure of Metals, 3rd ed., pp. 404, 415, McGraw-Hill Book Co., New York, 1966.
2. R. L. Bell and R. W. Cahn:Proc. Roy. Soc. London, 1957, vol. A239, pp. 494–521.
3. J. H. Wernick and E. E. Thomas:Trans. TMS-AIME, 1960, vol. 218, pp. 763–14.
4. P. R. Price:J. Appl. Phys., 1961, vol. 32, pp. 1750–57.
5. E. Schiebold and G. Siebel:Z. Metallk., 1931, vol. 69, pp. 458–82.