1. Esaka T, Fujii T, Suwa K, Iwahara H (1990) Solid State Ionics 40/41:544
2. Sujita D, Norby T, Osborg PA, Kofstad P (1993) In: Singhal SC, Iwahara H (eds) Proc. of the 3rd Int. Symposium on Solid Oxide Fuel Cells, Electrochem. Soc. Proc., vol 93–4. Electrochemical Society, Pennington, NJ, pp 552–561
3. Selçuk A, Steele BCH (1995) Fourth Euro Ceramics-vol 5, Gusmano G, Traversa E (eds) (Editoriale Faenza Editrice S.p.A. 413)
4. Figueiredo FM, Waerenborgh JC, Kharton VV, Näffe H, Frade JR (2003) Solid State Ionics 156:371
5. Grenier J-C, Schiffmacher G, Caro P, Pouchard M, Hagenmuller P (1977) J Solid State Chem 20:365