MATHEMATICAL INVESTIGATION OF A MASS ACTION EPIDEMIC MODEL. The Transactions of the Nigerian Association of Mathematical Physics, [S. l.], v. 23, p. 127–138, 2026. DOI: 10.60787/tnamp.v23.630. Disponível em: https://nampjournals.org.ng/index.php/tnamp/article/view/630.. Acesso em: 10 jan. 2026.