1. Logothetis, E. M., p. 388 inAdvances in Ceramics, Vol. 3,Science and Technology of Zirconia I, Eds. A. H. Heuer and L. W. Hobbs, American Ceramic Society, Columbus, Ohio (1981).
2. Oxygen sensors
3. Gauthier, M., Belanger, A., Meas, Y. and Kleitz, M., p. 497 inSolid Electrolytes, Eds. P. Hagenmuller and W. Van Gool, Academic Press, New York (1978).