H. M. Farghally and  N. M. Ahmed and  H. T. El-Madany and  D. M. Atia and  F. H. Fahmy,  Design and Sensitivity Analysis of Photovoltaic/Thermal Solar Collector.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2014, vol. 89(5). 737 - 744
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/9998155.