B. Ogbuagu, M. D. Maigemu, and S. F. Abubakar, “WELL-POSEDNESS OF A NOVEL MATHEMATICAL MODEL FOR PERTUSSIS WITH VACCINATION AND ASYMPTOMATIC CLASSES”, FJS, vol. 8, no. 3, pp. 43–47, Jun. 2024, doi: 10.33003/fjs-2024-0803-2473.