Mouna Hamed and  Ammar B. Brahim,  Theoretical Model of a Flat Plate Solar Collector Integrated with Phase Change Material.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2015, vol. 108(12). 1501 - 1508
    [viewed 19 October 2019]. Available from: https://publications.waset.org/pdf/10005380.