CUREX, Nola; TOAHA, Syamsuddin; KASBAWATI. Stability Analysis of the Development Mathematical Models for the Spread of Covid-19 Effects of Vaccination and Campaigns as Processes in Controlling the Spread of Disease. Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika, [S. l.], v. 5, n. 2, p. 50–66, 2022. DOI: 10.30605/proximal.v5i2.1819. Disponível em: https://www.e-journal.my.id/proximal/article/view/1819. Acesso em: 8 jul. 2025.