WASET
    J. Pawłat and  H. Stryczewska,  Solar Energy for Water Conditioning.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2011, vol. 58(10). 627 - 632
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/5708.