2) C. S. Tedmon Jr., H. S. Spacil and S. P. Mitoff: J. Electrochem. Soc. 116 (1969) 1170.
3) D. B. Meadowcroft: Nature 226 (1970) 847.
4) A. C. C. Tseung and H. L. Bevan: The Electrochemical Society, Extended Abstracts of Battery Division of the 138th National Meeting (The Electrochemical Society, Inc., New York, 1970).
5) H. Ohbayashi, T. Kudo and T. Gejo: The Proceedings of the 13th Symposium on Batteries (Denchi Tohronkai) (The Chemical Society of Japan, Tokyo, 1972).