WASET
    Kolay P. K. and  Singh H.,  Geochemistry of Coal Ash in the Equatorial Wet Disposal System Environment.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2013, vol. 73(1). 83 - 86
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/9996742.