WASET
    M. Örvös and  T. Balázs and  K. F. Both,  Wastewater Treatment with Ammonia Recovery System.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2008, vol. 20(8). 116 - 120
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/6217.