Aini Fitriyah. Rumus Bilangan Reproduksi Dasar Covid-19 dengan Adanya Vaksinasi Dosis 1 dan 2. Limits [nternet]. 2022May15 [cited 2025Dec.6];19(1):87-100. vailable from: https://journal.its.ac.id/index.php/limits/article/view/5373