WASET
    Steady Mushayabasa,  A Simple Epidemiological Model for Typhoid with Saturated Incidence Rate and Treatment Effect.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    September 2012, vol. 66(6). 688 - 695
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/16921.