M. F. R. Zuthi and  H. H. Ngo and  W. S. Guo and  T. T. Nguyen,  The Effects of Biomass Parameters on the Dissolved Organic Carbon Removal in a Sponge Submerged Membrane Bioreactor.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 78(6). 266 - 270
    [viewed 07 March 2021]. Available from: https://publications.waset.org/pdf/3051.