John Kabuba and  Hilary Rutto,  Parameters Affecting the Removal of Copper and Cobalt from Aqueous Solution onto Clinoptiloliteby Ion-Exchange Process.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2014, vol. 92(8). 828 - 831
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9999211.