1. K. Kurokawa, H. Sugiyama, D. Uchida, K. Sakamoto, T. Ohshiro, K. Otani, K. Fukasawa, Sophisticated verification of simple monitored data for Japanese Field Test Program, WCPEC-2, Second World Conference On Photovoltaic Energy Conversion, Vienna, 6–10 July, 1998.
2. K. Kurokawa, D. Uchida, K. Otani, T. Sugiura, Realistic PV performance values obtained by a number of grid-connected systems in Japan, North Sun ‘99 (8th International Conference on Solar Energy in High Latitudes), Edmonton, Canada, 11–14, August 1999, Technical-Session 9.
3. K. Kurokawa, H. Sugiyama, D. Uchida, K. Sakuta, K. Sakamoto, T. Ohshiro, T. Matsuo, T. Katagiri, Extended performance analysis of PV systems in Japanese Field Test Program, 26th IEEE Photovoltaic Specialists Conference, Anaheim, USA, September 9–October 3, 1997, No. 298, Oral 6A.
4. K. Kurokawa, Realistic values of various parameters for PV system design, World Renewable Energy Congress V, Florence, 19–25, September, 1998.
5. Estimation of the diffuse radiation fraction for hourly, daily and monthly-average global radiation