Firdiansyah, Adin Lazuardy. “Effect of Fear in Leslie-Gower Predator-Prey Model With Beddington-DeAngelis Functional Response Incorporating Prey Refuge”. (IJCSAM) International Journal of Computing Science and Applied Mathematics, vol. 7, no. 2, Aug. 2021, pp. 56-62, https://journal.its.ac.id/index.php/ijcsam/article/view/4633.