US6471921-B1  Chick et al. (1990) Mater. Lett. 10(1,2):6-12.;  Cook et al. (1990) J. Electrochem. Soc. 137:3309-3310.;  Cook, R.L. and Sammells, A.F. (1991) Solid State Ionics 45:311-321.;  Crepin, M. and Hall, K.W. (1981) J. Catal. 69:359-370.;  Gallagher et al. (1964) J. Chem. Phys. 41(8):2429-2434.;  Goodenough et al. (1990) Solid State Ionics 44:21-31.;  Greaves et al. (1975) Acta Cryst. B31:641-646.;  Kuchynka, D.J. et al. (1991) J. Electrochem. Soc. 138(5):1284-1299.;  Matsumoto et al. (1980) J. Electrochem. Soc. 127(11):2360-2364.;  Pederson et al. (1991) Mater. Lett. 10(9,10):437-443.;  Pujare, N U and Sammells, A.F. (1988) J. Electrochem. Soc. 135(10):2544-2545.;  Rostrup-Nielson, J.R. and Bak Hansen, J.-H. (1993) J. Catalysis 144:38-49.;  Sammells et al. (1992) Solid State Ionics 52:111-123.;  Sammells, A.F. and Cook, R.L. (1991), "Rational Selection of Advanced Solid Electrolytes for Intermediate Temperature Fuel Cells," presented at the Ceramic Conductors for Solid-State Electrochemical Devices Meeting, May 12-15, 1991, Snowbird, UT, (abstract only).;  Sammells, T., (1991), "Rational Selection of Perovskites for Solid Electrolytes and Electrocatalysis," Presented at BP America Research, Warrenville Research Center, Sep. 16, 1991, 46pp.;  Schwartz, M. et al. (1993) J. Electrochem. Soc. 140(4):L62-L63 (Apr.).;  Shin, S. and Yonemura, M. (1978) Mat. Res. Bull. 13:1017-1021.;  Teraoka et al. (1985) Chem. Lett. 1367-1370.;  Teraoka et al. (1985) Chem. Lett. 1743-1746.;  Teraoka et al. (1988) Chem. Lett. 503-506.;  Teraoka et al. (1988) Mat. Res. Bull. 23:51-58.;  Teraoka, Y. et al. (1989) J. Ceram. Soc. Jpn. Inter. Ed. 97:458-462.;  Teraoka, Y. et al. (1989) J. Ceram. Soc.Jpn. Inter. Ed. 97:523-529.;  Zhen, Y.S. and Goodenough, J.B. (1990) Mat. Res. Bull. 25:785-790.;  van der Pauw (1958) Philips Res. Rep. 13(1):1-9.US6641626-B2  Chick et al. (1990)Mater. Lett. 10(1,2):6-12.;  Cook et al. (1990) J. Electrochem. Soc. 137:3309-3310.;  Cook, R.L. and Sammells, A.F. (1991) Solid State Ionics 45:311-321.;  Crespin, M. and Hall, K.W. (1981) J. Catal. 69-359-370.;  Gallagher et al. (1964) J. Chem. Phys. 41(8):2429-2434.;  Goodenough et al. (1990) Solid State Ionics 44:21-31.;  Greaves et al. (1975) Acta Cryst. B31:641-646.;  Kuchynka, D.J. et al. (1991) J. Electrochem. Soc. 138(5):1284-1299.;  Matsumoto et al. (1980) J. Electrochem. Soc. 127(11):2360-2364.;  Pederson et al. (1991) Mater. Lett. 10(9,10):437-443.;  Pujare, N U and Sammells, A.F. (1988) J. Electrochem. Soc. 135(10):2544-2545.;  Rostrup-Nielson, J.R. and Bak Hansen, J-H. (1993) J. Catalysis 144:38-49.;  Sammells et al. (1992) Solid State Ionics 52:111-123.;  Sammells, A.F. and Cook, R.L. (1991), "Rational Selection of Advanced Solid Electrolytes for Intermediate Temperature Fuel Cells," presented at the Ceramic conductors for Solid-State Electrochemical Devices Meeting, May 12-15, 1991, Snowbird, UT, (abstract only).;  Sammells, T., (1991), "Rational Selection of Perovskites for Solid Electrolytes and Electrocatalysis," Presented at BP America Research, Warrenville Research Center, Sep. 16, 1991, 46 pp.;  Schwartz, M. et al. (1993) J. Electrochem. Soc. 140(4):L62-L63 (Apr.).;  Shin, S. and Yonemura, M. (1978) Mat. Res. Bull. 13:1017-1021.;  Teraoka et al. (1985) Chem. Lett. 1367-1370.;  Teraoka et al. (1985) Chem. Lett. 1743-1746.;  Teraoka et al. (1988) Chem. Lett. 503-506.;  Teraoka et al. (1988) Mat. Res. Bull. 23:51-58.;  Teraoka, Y. et al. (1989) J. Ceram. Soc. Jpn. Inter. Ed. 97:458-462.;  Teraoka, Y. et al. (1989) J. Ceram. Soc. Jpn. Inter. Ed. 97:523-529.;  Zhen, Y.S. and Goodenough, J.B. (1990) Mat. Res. Bull. 25:785-790.;  van der Pauw (1958) Philips Res. Rep. 13(1):1-9.