S. Heydari and  H. Sharififard and  M. Nabavinia and  H. Kiani and  M. Parvizi ,  Adsorption of Chromium Ions from Aqueous Solution by Carbon Adsorbent.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2013, vol. 84(12). 913 - 916
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9996871.