1. J. T. Kummer and N. Weber,Proc. SAE Congr., (1967), Paper 670179.
2. J. L. Sudworth and A. R. Tilley, ?The Sodium Sulphur Battery?, Chapman and Hall Ltd., New York, (1985) and references therein.
3. R. P. Tischer, ?The Sulphur Electrode?, Academic Press, New York, (1983).
4. M. Liu, ?Degradation of Sodium ?? Alumina Electrolyte in Contact with Sulfur/Sodium Polysulfide Melts?, Lawrence Berkeley Laboratory, Report (1986) LBL-21563; seeEnergy Abstr, (1986),11 (32), Abstr. no. 50849.
5. N. P. Yao and J. R. Selman, ?'Proc. Symp. Load Levelling?, ECS, Princeton, NJ, (1977).