E Andry Dwi Kurniawan, Fatmawati, and Aprilia Dianpermatasari. “Model Matematika SEAR Dengan Memperhatikan Faktor Migrasi Terinfeksi Untuk Kasus COVID-19 Di Indonesia”. Limits: Journal of Mathematics and Its Applications 18, no. 2 (November 15, 2022): 142–153. Accessed January 24, 2026. https://journal.its.ac.id/index.php/limits/article/view/5248.