Initial Growth Rate and Model Performance for COVID-19 in Nigeria. Contemporary Mathematics , [S. l.], v. 6, n. 2, p. 2377–2391, 2025. DOI: 10.37256/cm.6220255889. Disponível em: https://ojs353.mebyme.cn/index.php/CM/article/view/5889. Acesso em: 24 dec. 2025.