1. Aixtron. (2007). AIX 3000. Retrieved from http://www. aixtron.com
2. Alcatel Lucent. (2004, April 26). Bell Labs Celebrates 50th Anniversary of the Solar Cell. Retrieved from http://www.alcatel-lucent.com
3. Alsema, E., & de Wild-Scholten, M. (1996). Environmental Impacts of Crystalline Silicon Photovoltaic Module Production. 13th CIRP Intern. Conf. on Life Cycle Engineering, Leuven, Germany.
4. Alsema, E., de Wild-Scholten, M., & Fthenakis, V. (1996). Environmental impacts of PV Electricity Generation - a Critical Comparison of Energy Supply Options. Proceedings of the21st European Photovoltaic Solar Energy Conference.