1. F. S. Buffington, I. D. Bakalar, and M. Cohen: The Physics of Powder Metallurgy. Chapter 6 (1951) Ed. W. E. Kingston. New York. McGraw-Hill Book Co.
2. C. E. Birchenall and R. F. Mehl: Trans. Aime (1950) 188, p. 144; Journal of Metals (January 1950). (1950) 188, p. 144; Journal of Metals (January 1950).
3. F. Seitz: Acta Cryst. (1950) 3, p. 355.