Kemal Comakli and  Meryem Terhan,  Energy and Economic Analysis of Heat Recovery from Boiler Exhaust Flue Gas.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2016, vol. 112(4). 450 - 458
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10004340.