NWANKWO, A.; OKUONGHAE, D. A NOTE ON THE BACKWARD BIFURCATION PHENOMENON IN A TUBERCULOSIS MATHEMATICAL MODEL. International Journal of Mathematical Analysis and Modelling, [S. l.], v. 1, n. 1, 2023. Disponível em: https://tnsmb.org/journal/index.php/ijmam/article/view/2. Acesso em: 28 jul. 2026.