Ashish Pathak and  Dong-Jin Kim and  Byoung-Gon Kim,  Effect of Pulp Density on Biodesulfurization of Mongolian Lignite Coal.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2014, vol. 92(8). 618 - 621
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10003942.