1. J. T. BROWN, “High Conductivity Solid Conductor, Recent Trends and Applications” edited by T. Takahashi (World Scientific Publishing Co., Singapore, 1989) p. 630.
2. A. J. APPLEBY, in “Fuel Cell Handbook” (Van Nostrand Reinhold, New York, 1989) p. 579.
3. O. YAMAMOTO, Y. TAKEDA, R. KANO and M. NODA,Solid State Ionics 22, (1987) 241.
4. R. SCHMIDBERGER and W. DöNITZ, DE Patent 2 824 408 B2, 1981.
5. R. KOC, H. U. ANDERSON, S. A. HOWARD and D. M. SPARLIN, in “Proceedings of the First International Symposium on SOFC, Florida”, edited by S. C. Singhal (The Electrochemical Society Inc., Pennington, NJ, 1989) p. 220.