1. Kadotani, K., T. Matsuki, A. Okamoto, M. Kayo and T. Nakamura; Black Liquid Type Solar Hot Water Supply System-Long Term System Performance, International Symposium on Thermal Application of Solar Energy, Hakone, Japan (1985)
2. A Hybrid Amorphous Silicon Photovoltaic and Thermal Solar Collector;Kiss;Solar Cells,1986