Ayoade, A. A., Peter, O. J., Oguntolu, F. A., Ishola, C. Y., & Amadiegwu, S. (2018). On the verification of existence of backward bifurcation for a mathematical model of cholera dynamics. International Journal of Mathematical Sciences and Optimization: Theory and Applications, 2018, 312 - 320. Retrieved from http://ijmso.unilag.edu.ng/article/view/42