Xindong ZHANG และ Juan LIU. (2014) An Analytic Study on Time-Fractional Fisher Equation using Homotopy Perturbation Method. <i>Walailak Journal of Science and Technology</i>, <i>11</i>(11), 975.Xindong ZHANG และ Juan LIU. "An Analytic Study on Time-Fractional Fisher Equation using Homotopy Perturbation Method". Walailak Journal of Science and Technology 11 (2014):975.Xindong ZHANG และ Juan LIU. An Analytic Study on Time-Fractional Fisher Equation using Homotopy Perturbation Method. Walailak University:ม.ป.ท. 2014.