F. Lemfeld and  K. Frana,  Fin Spacing Effect of the Tube Fin Heat Exchanger at the Floor Heating Convector.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2012, vol. 65(5). 867 - 870
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/15138.