MATHEMATICAL ANALYSIS OF COVID-19 INFECTION MODEL WITH DEMOGRAPHIC DYNAMICS. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 7, n. 6, p. 92–103, 2024. DOI: 10.33003/fjs-2023-0706-2176. Disponível em: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/2176. Acesso em: 8 sep. 2025.