WASET
    Irtaza M. Syed and  Kaamran Raahemifar,  Comparative Analysis of Photovoltaic Systems.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2015, vol. 106(10). 1134 - 1141
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10002607.