Amine Bouaine, Mostafa Rachik, and Khalid Hattaf. “Optimization Strategies Applied to Discrete Epidemic Models With Specific Nonlinear Incidence Rate”. International Journal of Mathematics And its Applications 4, no. 1 - D (March 15, 2016): 73–80. Accessed May 19, 2024. http://ijmaa.in/index.php/ijmaa/article/view/619.