1. Lenel F V, and Metal F V, Powder Metallurgy: Principles and Applications, Metal Powder Industries Federation, Princeton (1980).
2. Ariel E, Barta J, and Brandon P, Powder Metall Int 5 (1973)126.
3. German R M, Bourguignon L L, and Rabin B H, J Met 37 (1985) 36.
4. German R M, and Churn K S, Metall Trans A 15A (1984) 747.
5. Noh JW, Kim E P, Song H S, Baek W H, Churn K S, and Kang S J L, Metall Trans 24 (1993) 2411.