SINGH, Jitendra. A Mathematical Model for Infection of the Human Body by the Effects of Coronavirus. International Journal of Scientific Research in Biological Sciences, [S. l.], v. 8, n. 4, p. 55–58, 2021. Disponível em: https://ijsrbs.isroset.org/index.php/j/article/view/478. Acesso em: 5 apr. 2025.