WASET
    Jefrey Pilusa and  Edison Muzenda,  Beneficiation of Pyrolitic Carbon Black.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2013, vol. 82(10). 733 - 737
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/17100.