A. Arafa, S. Z. Rida, and M. Khalil, “Solutions of Fractional model of human T-cell lymphotropic virus I (HTLV-I) infection of CD4+ T-cells using HAM”, IJBAS, vol. 1, no. 1, pp. 1–14, Mar. 2012, doi: 10.14419/ijbas.v1i1.15.