Naji R, Muhseen A. Stability Analysis with Bifurcation of an SVIR Epidemic Model Involving Immigrants. Iraqi Journal of Science [Internet]. 2024 Jan. 26 [cited 2025 Dec. 18];54(2):397-408. Available from: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/12310