REFERENCES
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- A. R. E. SINGER: British Patent l 262 471.
- A. R. E. SINGER: J. inst. Mel., 1972, 100, 185–190.
- B. S. RICKINSON, F. A. KIRK, and D. R. G. DAVIES: Powder Metall., 1981, 24, (1), 1–6.
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- R. W. EVANS: personal communication. Department of Metallurgy and Materials Technology, University College of Swansea.