1. Y. Arai, T. Sako, and Y. Takebayashi, inSupercritical fluidsmolecular interactions, physical properties, and new applications, Springer, Heidelberg, 2002.
2. Y. Nagase, M. Yamagata, and R. Fukuzato,R&D Kobe Steel Engine. Report,47, 43 (1997).
3. H. Tagaya, Y. Shibasaki, C. Kato, J. Kadokawa, and B. Hatano,J. Mater. Cycles Waste Manag.,6, 1 (2004).
4. M. Genta, T. Iwaya, M. Sasaki, M. Goto, and T. Hirose,Ind. Eng. Chem. Res.,44, 3894 (2005).
5. M. Goto, M. Sasaki, and T. Hirose,J. Mater. Sci.,41, 1509 (2006).