Swati Tomar and  Sunil Kumar Gupta,  Investigating the Process Kinetics and Nitrogen Gas Production in Anammox Hybrid Reactor with Special Emphasis on the Role of Filter Media.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2015, vol. 105(9). 1091 - 1097
    [viewed 20 February 2020]. Available from: https://publications.waset.org/pdf/10002374.