Zafar, Z. U. A. ., M. . Mushtaq, K. . Rehan, and M. . Rafiq. “Numerical Simulation of Fractional Order Dengue Disease With Incubation Period of Virus: Fractional Order Dengue Disease”. Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences, vol. 54, no. 3, Apr. 2021, pp. 277–296, http://ppaspk.org/index.php/PPAS-A/article/view/233.