A. J. Mahmood and  L. B. Y. Aldabbagh,  Double Pass Solar Air Heater with Transvers Fins and without Absorber Plate.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 78(6). 1293 - 1298
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/8230.