1. 1) Samejima, A., Ito, S., Yamaguchi, K., J. Soc. Automotive Engineers Jpn., 55, (5), 24 (2001).
2. 2) Ma, X., Sakanishi, K., Isoda, T., Mochida, I., "Hydrotreating Technology for Pollution Control-Catalysts, Catalysis, and Processes," eds. by Occelli, M. L., Chianelli, R., Marcel Dekker, Inc., (1996), p. 183.
3. 3) Louwers, S. P. A., Prins, R., J. Catal., 139, 525 (1993).
4. 4) Bouwens, S. M. A. M., van Veen, J. A. R., Koningsberger, D. C., de Beer, V. H. J., Prins, R., J. Phys. Chem., 95, 123 (1991).
5. 5) Hiroshima, K., Mochizuki, T., Honma, T., Shimizu, T., Yamada, M., Appl. Surf. Sci., 121/122, 433 (1997).