Ojo, M. M, and F. O Akinpelu. “Lyapunov Functions and Global Properties of SEIR Epidemic Model”. International Journal Of Chemistry, Mathematics And Physics(IJCMP) 1, no. 1 (May 3, 2017). Accessed November 22, 2024. https://journal-repository.com/index.php/ijcmp/article/view/3316.