Uniqueness of Limit Cycles in a Predator-Prey Model with Sigmoid Functional Response. Journal of Nonlinear Modeling and Analysis, [S. l.], v. 5, n. 4, p. 790–802, 2024. DOI: 10.12150/jnma.2023.790. Disponível em: https://global-sci.com/index.php/jnma/article/view/13717. Acesso em: 5 dec. 2025.