[1]
A. A. Mohsen, H. F. AL-Husseiny, K. Hattaf, and B. . Boulfoul, “A mathematical model for the dynamics of COVID-19 pandemic involving the infective immigrants”, Iraqi Journal of Science, vol. 62, no. 1, pp. 295–307, Jan. 2021, doi: 10.24996/ijs.2021.62.1.28.