S. S. Rwanga and  J. M. Ndambuki and  Y. Woyessa,  Development of Groundwater Management Model Using Groundwater Sustainability Index .   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2018, vol. 138(6). 612 - 617
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10009103.