Ashish Pathak and  Dong-Jin Kim and  Haragobinda Srichandan and  Byoung-Gon Kim,  Depyritization of US Coal Using Iron-Oxidizing Bacteria: Batch Stirred Reactor Study.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2013, vol. 83(11). 839 - 842
    [viewed 26 May 2020]. Available from: https://publications.waset.org/pdf/9996567.