1. 1) Tan, I., Tanaka. H., Uenishi, M., Kajita, N., Taniguchi, M., Nishihata, Y. and Mizuki, J., SAE paper, No. 2003-01-0812 (2003).
2. 2) Nishihata, Y., Mizuki, J., Akao, T., Tanaka, H., Uenishi, M., Kimura, M., Okamoto T. and Hamada N., Nature, Vol. 418, pp. 164-167 (2002).
3. 3) Tanaka, H., Tan, I., Uenishi, M., Kimura, M. and Dohmae, K., “Topics in Catalysis, Vols. 16/17,” Eds. Kruse, N., Frennet, A. and Bastin, J.-M., Kluwer Academic, New York (2001) pp. 63-70.
4. 4) Tanaka, H., Uenishi, M., Tan, I., Kimura, M., Mizuki, J. and Nishihata, Y., SAE paper, No. 2001-01-1301 (2001).
5. 5) Sato, N., Tanaka, H., Tan, I., Uenishi, M., Kajita, N., Taniguchi, M., Narita, K. and Kimura, M., SAE paper, No. 2003-01-0813 (2003).