Olufisayo A. Olufayo and  Fred A. O. Otieno and  George M. Ochieng,  Run-off Storage in Sand Reservoirs as an Alternative Source of Water Supply for Rura land Semi-arid areas of South Africa.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2009, vol. 32(8). 250 - 253
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/2265.