1. D. Uchida, K. Otani, K. Kurokawa, Evaluation of effective shading factor by fitting a clear-day pattern obtained from hourly maximum irradiance data, PVSEC-11, Sapporo, Japan, September 1999, pp. 251–252.
2. K. Morita, et al., Correlation between the change of the appearance and reduction in the output power of crystalline Si solar cell modules by outdoor exposure, Proceedings of the JSES/JWEA Joint Conference, 2000, pp. 287–290 (in Japanese).
3. S. Sakamoto, et al., Degradation analysis of silicon PV modules after long term field exposure, 2001 National Convention of IEEJ, Vol. 7–157, March 2001 (in Japanese).
4. N. Yonekura, et al., Influence of the shadow on the electric power generation of a photovoltaic module, Proceedings of the JSES/JWEA Joint Conference, 1999, pp. 21–24 (in Japanese).
5. A. Kitamura, H. Matsuda, Long term degradation phenomena of crystalline Si solar modules, PVSEC-12, Korea, June 2001, pp. 757–758.