WASET
    V.O. Ojijo and  M.S. Onyango and  Aoyi Ochieng and  F.A.O. Otieno,  Decolourization of Melanoidin Containing Wastewater Using South African Coal Fly Ash.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2010, vol. 37(1). 58 - 64
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/7435.