1. W. D. Jones: Fundamental Principles of Powder Metallurgy, Arnold, London, 1960.
2. R. P. Seelig: Trans. AIME, 1947, p. 506.
3. M. F. Burr and M. J. Donachie, Jr.: The Fall Meeting of The Metallurgical Society, 1963, submitted to Trans. ASM.
4. M. F. Burr: M.S. Thesis; Rensselaer Polytechnic Institute, 1961.
5. R. W. Heckel: Trans. Met. Soc., AIME, 1961, p. 1001.