VIVEK ILY. Using the SIR Model as a Guideline for Vaccination during an Infectious Disease. International Journal of Mathematics And its Applications, [S. l.], v. 8, n. 2, p. 165–170, 2020. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/169. Acesso em: 19 may. 2024.