Supriyo Goswami and  Debabrata Mazumder ,  Treatment of Chrome Tannery Wastewater by Biological Process - A Mini Review .   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2013, vol. 83(11). 798 - 804
    [viewed 10 May 2021]. Available from: https://publications.waset.org/pdf/10001315.