WASET
    E. A. Kiridi and  A. O. Ogunlela,  Toxicity Depletion Rates of Water Lettuce (Pistia stratoites) in an Aquaculture Effluent Hydroponic System .   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2016, vol. 112(4). 252 - 256
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10005545.