A. A. . Mohsen and R. K. Naji, “Dynamical Analysis Within-Host and Between-Host for HIV\AIDS with the Application of Optimal Control Strategy: Dynamical analysis within-host and between-host for an HIV\AIDS”, Iraqi Journal of Science, vol. 61, no. 5, pp. 1173–1189, May 2020, doi: 10.24996/ijs.2020.61.5.25.