Maya P, S., Hariyanto, H., & Yunus, M. (2016). Stability Analysis On Models Of Spreading H1N1 And H5N1 Virus In Two Locations. (IJCSAM) International Journal of Computing Science and Applied Mathematics, 2(2), 26–28. Retrieved from https://journal.its.ac.id/index.php/ijcsam/article/view/4591