An Analysis of a Partial Temporary Immunity SIR Epidemic Model with Nonlinear Treatment Rate. Baghdad Science Journal, Iraq, Baghdad, v. 16, n. 3, p. 0639, 2019. DOI: 10.21123/bsj.2019.16.3.0639. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/3945.. Acesso em: 2 may. 2024.