1. Proc. Mater. Res. Soc. Spring;Tuttle,1996
2. Proc. 25th IEEE Photovoltaic Specialists Conf.;Ruckh,1996
3. Proc. 25th IEEE Photovoltaic Specialists Conf.;Kessler,1996
4. Proc. 13th Photovoltaic Solar Energy Conf.;Kohara,1995
5. Proc. Materi. Res. Soc. 1996 Spring Meeting;Kushiya,1996