1. R. Barnard, A. H. Rafinski, J. A. Lee and F. L. Tye ?Power Sources 5?, Proc. 9th Int. Power Sources Symp, (Ed. D. H. Collins), Academic Press, London (1975) p. 183.
2. J. McCallum and A. H. Reed, Technical Report A. F. APL-TR-72-20, AD 743017, Battelle (1972).
3. R. D. Armstrong, K. Edmondson and J. A. LeeJ. Electroanal chem. 63 (1975) 287.
4. R. Barnard, K. Edmondson, J. A. Lee and F. L. TyeJ. Appl. Electrochem. To be published.
5. A. J. Salkind and G. W. Bodamer, ?Batteries 2? Proc. 4th Int. Power Sources Symp. (Ed. D. H. Collins), Pergamon Press (1964) p. 55