Rahmalia, Dinita, and Teguh Herlambang. “Weight Optimization of Optimal Control Influenza Model Using Artificial Bee Colony”. (IJCSAM) International Journal of Computing Science and Applied Mathematics, vol. 4, no. 1, Feb. 2018, pp. 27-31, https://journal.its.ac.id/index.php/ijcsam/article/view/4567.