Mohsen, A. A., 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, May 2020, pp. 1173-89, doi:10.24996/ijs.2020.61.5.25.