M. Z. Othman and  S. Uludag-Demirer and  G. N. Demirer,  Enhanced Nutrients Removal in Conventional Anaerobic Digestion Processes.   journal   = {International Journal of Nutrition and Food Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2009, vol. 34(10). 539 - 545
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/6692.