1. Atmaram, G.H., TamizhMani, G., Ventre, G.G., 2008. Need for uniform photovoltaic module performance testing and ratings. In: Proceedings of the 33rd IEEE Photovoltaic Specialists Conference 2008, San Diego, U.S.A. pp. 1–6.
2. Ayoub, J., Dignard Bailey, L., 2009. Photovoltaic technology status and prospects - Canadian annual report 2009, CETC Number 2010-023/2010-04-28. Available online at (13.08.10).
3. Becker, G., Schiebelsberger, B.,Weber, W., 2006. An approach to the impact of snow on the yield of grid-connected PV systems. In: Proceedings of European PVSEC 2006, Dresden, Germany. Preprint available from (20.07.10).
4. California Energy Commission, 2001. A guide to photovoltaic system design and installation. 2001. Available online at (20.07.10).
5. A comparison of the performance of different PV module types in temperate climates;Carr;Solar Energy,2004