B. Silva and  H. Figueiredo and  I. C. Neves and  T. Tavares,  The role of pH on Cr(VI) Reduction and Removal by Arthrobacter Viscosus.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2008, vol. 19(7). 70 - 73
    [viewed 31 March 2020]. Available from: https://publications.waset.org/pdf/4530.