WASET
    Mohammed A. Elhaj and  Jamal S. Yassin,  Thermal Performance of an Air Heating Storing System.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2014, vol. 89(5). 945 - 948
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9998283.