D. Sivakumar, C. Loganathan, and M. Prakash. “Dynamical Analysis of a Fractional Order Delayed Prey-Predator Model With Stage Structure”. International Journal of Mathematics And Its Applications, vol. 6, no. 2 - B, June 2018, pp. 261-7, http://ijmaa.in/index.php/ijmaa/article/view/724.