1. R. M. German, Powder Metallurgy Science, Metal Powder Industries Federation (MPIF), Princeton, NJ, USA (1994).
2. W. Schatt and K. P. Wieter, Powder Metallurgy Processing and Materials, EMPA, Shewsbury (1997).
3. G. Matula, L. A. Dobrzanski, G. Herranz, et al., “Structure and properties of HS6-5-2 type HSS manufactured by different P/M methods,” J. Achiev. Mater. Manuf. Eng., 24(2), 71 – 74 (2007).
4. R. A. Mesquita and C. A. Barbosa, “High speed steel produced through conventional casting, spray forming and powder metallurgy,” in: Proc. 6th Int. Tooling Conf., Karlstad, Sweden (2002), pp. 387 – 402.
5. R. Schneider, A. Schulz, C. Bertrand, et al., “The performance of spray-formed tool steels in comparison to conventional route material,” in: Proc. 6th Int. Tooling Conf., Karlstad, Sweden (2002), pp. 1111 – 1124.