1. For example, Union Carbide Corp., Crystal Products Dept., 8888 Balboa Ave, San Diego, CA. 45
2. J. Fally, C. Lasne, Y. Lazennec, Y. Le Cars, and P Margotin, J. Electrochem. Soc. 120, 1296 (1973).
3. I. Wynn Jones and L. J. Miles, Proc. Brit. Ceram. Soc. 19, 161, 179 (1971).
4. A. Imai and M. Harata, Jap. J. Appl. Phys. 11, 180 (1972).
5. John H. Kennedy and Anthony F. Sammells, p. 563, Fast Ion Transport in Solids, W. van Gool, Editor, North- Holland Publishing Company (1973).