REFERENCES
- UK Patent no. 147239.
- J. MITCHELL: Steel Times, March 1983.
- B. WILLIAMS: Met. Powder Rep. , January 1983.
- A. It. E. SINGER and R. W. EVANS: Met. Techrwl., 1983, 10, 61.
- A. G. LEATHAM: PhD thesis, University of Wales, 1972.
- J. S. cooms: Osprey Metals Ltd, personal communication.