1. D. Sarti and R. Einhaus, Solar Energy Materials & Solar Cells, 72 (2002), pp. 2740.
2. Media Release, “Solar Industry-Stormy Weather Will Give Way to Sunnier Periods” (Bank Sarasin & Co. Ltd., Elisabethenstrasse 62,4002 Basel, Switzerland, 2008), www.sarasin.ch/internet/iech/en/index_iech/about_us_iech/about_us_media_iech/medienmitteilung_17.11.2008.pdf.
3. P. Wyers, “The PV Roadmap and Prospects for Silicon Technology;” ECN Solar Energy Report (2007), www.jointsolarpanel.nl/fileadmin/jointsolarpanel/user/documents/seminar2004/wyerszc04.pdf.
4. R.M. Swanson, Electron Devices Meeting Proceedings (Piscataway, NJ: IEEE International, 2007), pp. 359–362.
5. A. Istratovet et al., Mater. Sei. Eng:B, 134(2–3) (2006), pp. 282–286.