1. J. M. Fisher and A. Carter, in ?The 2nd Battery Materials Symposium (Eds. K. Kordesch and A. Kozawa) Vol. 2, Graz. (1985) IBA Cleveland, Paper No. 24 (1986).
2. E. Preisler,Chem.-Ing.-Tech. 49 (1977) 347.
3. E. Preisler and G. Mietens, Dechema Monogr. Vol. 109, Verlag Chemie, Weinheim (1987) 123?37.
4. M. Misawa, K. Matsuura and T. Okuda, Jap. Pat. 57-1087 (1982).
5. M. Misawa, T. Okuda and K. Matsuura, Jap. Pat. 57-42711 (1982).