E Andry Dwi Kurniawan, Fatmawati, and Aprilia Dianpermatasari. “odel atematika EAR engan emperhatikan aktor igrasi erinfeksi ntuk asus OVID-19 i ndonesia”. Limits: Journal of Mathematics and Its Applications 18, no. 2 (November 15, 2022): 142–153. ccessed December 6, 2025. https://journal.its.ac.id/index.php/limits/article/view/5248.