1. I. Yasuda andT. Hikita, in Proceedings of the Second International Symposium on Solid Oxide Fuel Cells, Athens, Greece, 1991, edited by F. Gross, P. Zegers, S. C. Singhal, and O. Yamamoto. (Commission of the European Communities, Luxembourg, 1991) p. 645.
2. N. Sakai, T. Kawada, H. Yokokawa, M. Dokiya andT. Iwata,Solid State Tonics 40/41 (1990) 394.
3. N. Sakai, T. Kawada, H. Yokokawa, M. Dokiya andI. Kojima,T. Amer. Ceram. Soc. 76 (1993) 609.
4. J. D. Carter, Ph.D. Dissertation, University of Missouri-Rolla, Rolla MO, (1992).
5. L. A. Chick, T. R. Armstrong, D. E. McCready, G. W. Coffey, G. D. Maupin andJ. L. Bates, in Proceedings of the Third International Symposium on Solid Oxide Fuel Cells, Honolulu, 1993, Vol. 93?4, edited by S.C. Singhal, and H. Iwahara, (Pennington, NJ, The Electrochemical Society, Inc., 1993) p. 374.