SEIR MODEL WITH A VACCINATION PARAMETER USING COVID-19 AS A CASE STUDY. The Journals of the Nigerian Association of Mathematical Physics, [S. l.], v. 63, p. 135 –142, 2022. Disponível em: https://nampjournals.org.ng/index.php/home/article/view/120.. Acesso em: 21 nov. 2024.