1. 1) H. Iwahara, T. Esaka, H. Uchida and N. Maeda, Solid State Ionics, 3–4, 359–363 (1981).
2. 2) H. Iwahara, T. Yajima, T. Hibino and H. Ushida, J. Electrochem. Soc., 140, 1687–1691 (1993).
3. 3) T. Shimada, C. Wen, N. Taniguchi, J. Otomo and H. Takahashi, J. Power Sources, 131, 289–292 (2004).
4. 4) N. Ito, M. Iijima, K. Kimura and S. Iguchi, J. Power Sources, 152, 200–203 (2005).
5. 5) K. Uchiyama, Y. Isse, Y. Hori, T. Nishida, Y. Uraoka, T. Kariya and K. Yanagimoto, Proc. 6th Thin-Films Materials and Devices Meeting, Nov.2–3, Kyoto, Japan (2009) p. 100228102.