Febryantika, A., Marwan, M., Awalushaumi, L., & Syechah, B. (2023). MODEL OF TRANSMISSION COVID-19 USING SIQRD MODEL WITH THE EFFECT OF VACCINATION IN MATARAM. BAREKENG: Jurnal Ilmu Matematika Dan Terapan, 17(3), 1265-1276. https://doi.org/10.30598/barekengvol17iss3pp1265-1276