EP974564-A1  DATABASE CHEMABS [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US SUNSTROM, JOSEPH E., IV ET AL: "The synthesis and properties of the chemically oxidized perovskite, La1-xSrxCoO3-.delta. (0.5 = x = 0.9)" XP002087836&J. SOLID STATE CHEM. (1998), 139(2), 388-397 CODEN: JSSCBI;ISSN: 0022-4596,;  DATABASE CHEMABS [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US KHARTON, V. V. ET AL: "Development of mixed conductive materials for high-temperature electrochemical oxygen membranes" XP002087837&HIGH TEMP. ELECTROCHEM.: CERAM. MET., PROC. RISOE INT. SYMP. MATER. SCI., 17TH (1996), 301-306. EDITOR(S): POULSEN, F. W. PUBLISHER: RISOE NATIONAL LABORATORY, ROSKILDE, DEN. CODEN: 63PAA2,;  DATABASE CHEMABS [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US TAKEDA, Y. ET AL: "Cathodic polarization phenomena of perovskite oxide electrodes with stabilized zirconia" XP002087838&J. ELECTROCHEM. SOC. (1987), 134(11), 2656-61 CODEN: JESOAN;ISSN: 0013-4651,;  PATENT ABSTRACTS OF JAPAN vol. 013, no. 343 (E-796), 2. August 1989 (1989-08-02)&JP 01 100866 A (TOA NENRYO KOGYO KK), 19. April 1989 (1989-04-19);  DE SOUZA R A ET AL: "Oxygen transport in La1-xSrxMn1-yCoyO3+-delta perovskites - Part I. Oxygen tracer diffusion" SOLID STATE IONICS, Bd. 106, Nr. 3-4, 1. Februar 1998 (1998-02-01), Seite 175-187 XP004111872EP974564-B1  DATABASE CHEMABS AeOnline] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US KHARTON, V. V. ET AL: "Development of mixed conductive materials for high-temperature electrochemical oxygen membranes" XP002087837 & HIGH TEMP. ELECTROCHEM.: CERAM. MET., PROC. RISOE INT. SYMP. MATER. SCI., 17TH (1996), 301-306. EDITOR(S): POULSEN, F. W. PUBLISHER: RISOE NATIONAL LABORATORY, ROSKILDE, DEN. CODEN: 63PAA2,;  DATABASE CHEMABS AeOnline] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US SUNSTROM, JOSEPH E., IV ET AL: "The synthesis and properties of the chemically oxidized perovskite, La1-xSrxCoO3-.delta. (0.5 &lt;= x &lt;= 0.9)" XP002087836 & J. SOLID STATE CHEM. (1998), 139(2), 388-397 CODEN: JSSCBI;ISSN: 0022-4596,;  DATABASE CHEMABS AeOnline] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US TAKEDA, Y. ET AL: "Cathodic polarization phenomena of perovskite oxide electrodes with stabilized zirconia" XP002087838 & J. ELECTROCHEM. SOC. (1987), 134(11), 2656-61 CODEN: JESOAN;ISSN: 0013-4651,;  DE SOUZA R A ET AL: "Oxygen transport in La1-xSrxMn1-yCoyO3+-delta perovskites - Part I. Oxygen tracer diffusion" SOLID STATE IONICS, Bd. 106, Nr. 3-4, 1. Februar 1998 (1998-02-01), Seite 175-187 XP004111872;  PATENT ABSTRACTS OF JAPAN vol. 013, no. 343 (E-796), 2. August 1989 (1989-08-02) & JP 01 100866 A (TOA NENRYO KOGYO KK), 19. April 1989 (1989-04-19)