Putri AR, Nasran B, Rudianto B. Stability Analysis and Numerical Simulation of the COVID-19 SISiR Model : Bahasa Indonesia. JMSK [Internet]. 2023Sep.6 [cited 2025Jan.19];20(1):258- 267. Available from: http://118754.2bdvi7ajx.asia/index.php/jmsk/article/view/27747