Hopf Bifurcation of a Nonresident Computer Virus Model with Delay. Analysis in Theory and Applications, [S. l.], v. 34, n. 3, p. 199–208, 2018. DOI: 10.4208/ata.OA-2016-0035. Disponível em: https://global-sci.com/index.php/ata/article/view/15706. Acesso em: 5 dec. 2025.