1. Proceedings of the 4th International Symposium on Silicon Materials Science and Technology;Yoo,1981
2. Conference Records of the 12th IEEE Photovoltaic Specialists Conference;Heaps,1976
3. Conference Records of the 14th IEEE Photovoltaic Specialists Conference;Ciszek,1980
4. Conference Records of the 15th IEEE Photovoltaic Specialists Conference;Heaps,1981
5. Conference Records of the 13th IEEE Photovoltaic Specialists Conference;Belouet,1978