Nurdan Yildirim and  Arif Hepbasli,  Exergetic and Sustainability Evaluation of a Building Heating System in Izmir, Turkey.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2014, vol. 93(9). 1003 - 1011
    [viewed 10 May 2021]. Available from: https://publications.waset.org/pdf/9999488.