1. R. Irmann:Metallurgica, 1952, vol. 46, pp. 125–33.
2. R. Irmann: inSymposium on Powder Metallurgy, Iron and Steel Institute Special Report No. 58, 1956, pp. 236–41.
3. J. S. Benjamin and M. J. Bomford:Metall. Trans. A, 1977, vol. 8A, pp. 1301–05.
4. J. S. Benjamin:Metall. Trans., 1970, vol. 1, pp. 2943–51.
5. N. Dudzinski:J. Inst. Metals, 1952–53, vol. 81, pp. 49–55.