WASET
    Abdulrahman A. Bahaddad and  Mohammed Beshir,  Future of Electric Power Generation Technologies: Environmental and Economic Comparison.   journal   = {International Journal of Energy and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2021, vol. 172(4). 141 - 148
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/10011966.