Gholami H, Gachpazan M, Erfanian M. An efficient mathematical model for the Outbreak of COVID-19from the perspective of numerical analysis. Iraqi Journal of Science [Internet]. 2025 Nov. 30 [cited 2026 Jan. 9];66(11):5124-35. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11142