1. Proceedings of the First International Symposium on Solid Oxide Fuel Cells (S. C. Singhal, Ed.) The Electrochemical Society, Inc., Pennington, NJ, 1989, p. 279
2. Proceedings of the Second International Symposium on Solid Oxide Fuel Cells (F. Gross, P. Zegers, S. C. Singhal, and O. Yamamoto, Eds.) CEC Publications, Belgium, 1991, p. 1
3. Proceedings of the Third International Symposium on Solid Oxide Fuel Cells (S. C. Singhal and H. Iwahara, Eds.). The Electrochemical Society, Inc., Pennington, NJ, 1993, p. 665
4. E. Ivers-Tiffée, W. Wersing, M. Schießl, and H. Greiner, Ber. Bunsenges. Phys. Chem.94, 978 (1990)
5. L. Groupp and H. U. Anderson, J. Am. Ceram. Soc.59, 449 (1976)