Bifurcation Analysis of a Mathematical Model for the Covid-19 Infection among Pregnant and Non-Pregnant Women. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 15, n. 2, p. 537–556, 2022. DOI: 10.29020/nybg.ejpam.v15i2.4312. Disponível em: https://ejpam.com/index.php/ejpam/article/view/4312.. Acesso em: 3 may. 2024.