1. R. MORRELL,Proc. Brit. Ceram. Soc. 28 (1978) 53.
2. I. M. LACHMAN, R. D. BAGLEY and R. M. LEWIS,Amer. Ceram. Soc. Bull. 60 (1981) 202.
3. G. L. BOYD, J. R. KIDWELL and D. M. KREINER, in “Proceedings of the Twenty-Fourth Automotive Technology Development Contractors’ Coordination Meeting” (Society of Automotive Engineers, Warrendale, PA, 1986) pp. 115–135.
4. F. J. KOHL, C. A. STEARNS and G. C. FRYBURG, in “Metal-Slag-Gas Reactions and Process’ (The Electrochemical Society, Princeton, New Jersey, 1975), pp. 649–654.
5. T. STRANGMAN, Private Communication.