1. B. J. Crowe, Fuel Cells, A Survey (National Aeronautics and Space Administration, Washington, D.C., 1973), SP-5115.
2. D. Gidaspow, R. W. Lyczkowski, and B. S. Baker, U.S. patent No. 3,823,038 (1974).
3. R. Roberts, in The Primary Battery (G. W. Heise and N. C. Calhoun, eds.) (Wiley, New York, 1971), Ch. 9.
4. J. O’M. Bockris and A. J. Appleby, Energy
11, 95 (1986).
5. A. J. Appleby and E. B. Yeager, Energy 11, 137 (1986).