1. 1) Example, T. Nakata, et al.: Central Research Institute of Electric Power Industry (CRIEPI) Report, W90011 (1990)
2. 2) T. Hasegawa, et al.: CRIEPI Report, W95017 (1996)
3. 3) T. Hasegawa, et al.: CRIEPI Report, W94020 (1995)
4. 4) T. Hasegawa, et al.: CRIEPI Report, W99026 (2000)
5. 5) T. Hasegawa, et al.: CRIEPI Report, W00011 (2001)