Saragih, Sisca Sri Dewi, Jaharuddin, and Endar H. Nugrahani. 2022. “Sensitivity Analysis of the SVEIR Model on the Spread of Covid-19 Disease in Indonesia”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 65 (1):342-52. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/14957.