WASET
    L. Khalfa and  M. Bagane and  M. L. Cervera and  S. Najjar,  Competitive Adsorption of Heavy Metals onto Natural and Activated Clay: Equilibrium, Kinetics and Modeling.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 113(5). 583 - 589
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/10004535.