Solving Nonlinear COVID-19 Mathematical Model Using a Reliable Numerical Method. Ibn AL-Haitham Journal For Pure and Applied Sciences, [S. l.], v. 35, n. 2, p. 97–107, 2022. DOI: 10.30526/35.2.2818. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/2818.. Acesso em: 30 apr. 2024.