1. 1) T. Sakurai and J. Asami: "5.Powder Metallurgy (in Japanese)", SOKEIZAI, 48 (2007) 50-55.
2. 2) P. A. Christopher, C. Blais, and D. Maden: "Machining & Machinability of PM Components (A Collection of technical literature on Machining and Machinability in Powder Metallurgy)", APMI (2006) 48-61.
3. 3) P. A. Christopher, C. Blais, and D. Maden: "Machining & Machinability of PM Components (A Collection of technical literature on Machining and Machinability in Powder Metallurgy)", APMI (2006) 428-442.
4. 4) P. A. Christopher, C. Blais, and D. Maden: "Machining & Machinability of PM Components (A Collection of technical literature on Machining and Machinability in Powder Metallurgy)", APMI (2006) 443-448.
5. 5) P. A. Christopher, C. Blais, and D. Maden: "Machining & Machinability of PM Components (A Collection of technical literature on Machining and Machinability in Powder Metallurgy)", APMI (2006) 62-80.