1. Solar energy: the largest energy resource;Denholm,2010
2. The performance of flat plate solar heat collectors;Hottel;ASME Trans,1942
3. Effect of dirt on transparent covers in flat plate solar energy collectors;Garg;Solar Energy,1974
4. Effects of dust on the performance of thermal and photovoltaic flat plate collectors in Saudi Arabia: preliminary results;Nimmo,1979
5. PV power-study of system options and optimization;Salim,1988