1. Y. Hamakawa,Thin-Film Solar Cells Next Generation Photovoltaics and Its Applications, edited by Y. Hamakawa (Springer, Heidelberg, 2004), p. 1.
2. Y. Hamakawa, in Proceeding of the 1st World Conference on Photovoltaic Energy Conversion, Hawaii, 1999 (IEEE, New York, 1994), p. 34.
3. M. A. Green, J. Zhao, and A. Wang, in Proceeding of the 2nd World Conference on Photovoltaic Energy Conversion, Vienna, 1998 (European Commission, 1999), p. 1187.
4. M. A. Green, in Proceeding of the 5th International Photovoltaic Science and Engineering Conference, Kyoto, 1990 (Showado Insatsu K. K., Tokyo, 1990), p. 603.
5. Advances in Microcrystalline Silicon Solar Cell Technologies