Hen Friman,  Harnessing the Potential of Renewable Energy Sources to Reduce Fossil Energy Consumption in the Wastewater Treatment Process.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2024, vol. 209(5). 138 - 142
    [viewed 11 June 2024]. Available from: https://publications.waset.org/pdf/10013648.