The Effectiveness of Vaccination Against The Spread of COVID-19 with SEIR Mathematical Modeling in Gowa District. Jurnal Varian, [S. l.], v. 5, n. 1, p. 17–28, 2021. DOI: 10.30812/varian.v5i1.1404. Disponível em: https://journal.universitasbumigora.ac.id/Varian/article/view/1404. Acesso em: 1 jul. 2025.