1. G. C. Kuczynski, Trans. AIME,185 (1949), p. 169.
2. G. A. Geach and F. O. Jones, Research,2 (1949), p. 493.
3. B. H. Alexander, G. C. Kuczynski, and M. H. Dawson, The Physics of Powder Metallurgy, ed. by W. E. Kingston, New York (1951), p. 202.
4. B. H. Alexander and R. W. Baluffi, Acta Met.,5 (1957), p. 666.
5. A. L. Pranatis and L. Seigle, Powder Metallurgy, ed. by W. Leszynski, New York (1961), p. 53.