WASET
    Touhari Fadhila and  Mehaiguene Madjid and  Meddi Mohamed,  Study of the Quality of Surface Water in the Upper Cheliff Basin.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2015, vol. 108(12). 1449 - 1456
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10006763.