Ochi P. O., Agada A. A., Timothy J., Urum T. G., Ochi H. T., and Nworah D. A. “STABILITY ANALYSIS OF A SHIGELLA INFECTION EPIDEMIC MODEL AT ENDEMIC EQUILIBRIUM”. FUDMA JOURNAL OF SCIENCES, Vol. 7, no. 3, July 2023, pp. 48 -64, doi:10.33003/fjs-2023-0703-1706.