Arafa, Anas, et al. “Solutions of Fractional Model of Human T-Cell Lymphotropic Virus I (HTLV-I) Infection of CD4+ T-Cells Using HAM”. International Journal of Basic and Applied Sciences, vol. 1, no. 1, Mar. 2012, pp. 1-14, https://doi.org/10.14419/ijbas.v1i1.15.