Tafrikan M, Fatmawati F, Windarto W, Madubueze CE. A MATHEMATICAL MODEL OF DIPHTHERIA TRANSMISSION DYNAMICS WITH HETEROGENEOUS SUSCEPTIBILITY. BAREKENG: J. Math. & App. [Internet]. 8Apr.2026 [cited 10Apr.2026];20(3):1967-84. Available from: https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/20742