Nassereldeen A. Kabashi and  Suleyman A. Muyibi. Mohammed E. Saeed. and  Farhana I. Yahya,  A Study on Removal Characteristics of (Mn2+) from Aqueous Solution by CNT.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2009, vol. 35(11). 380 - 384
    [viewed 14 April 2021]. Available from: https://publications.waset.org/pdf/14874.