S. P. Sharma and  Som Nath Saha,  Thermohydraulic Performance of Double Flow Solar Air Heater with Corrugated Absorber.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2017, vol. 127(7). 855 - 861
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10007553.