29th Biennial Solar World Congress of the International Solar Energy Society, ISES 2009; Johannesburg; South Africa; 11 October 2009 through 14 October 2009. Vol. 1, p. 423-430
In proceedings of: The 18th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems. Trondheim, Norway June 22-22, 2005