MANJU AGARWAL AND VINAY VERMA. Analysis of an SIR Model with Saturating Contact Rate and Carrier- Dependent Infectious Diseases under the Effect of Environmental Discharge*. Journal of International Academy of Physical Sciences, [S. l.], v. 14, n. 3, p. 305–322, 2010. Disponível em: https://www.iaps.org.in/journal/index.php/journaliaps/article/view/242. Acesso em: 18 may. 2024.