Oscillation of Second Order Impulsive Differential Equations with Nonpositive Neutral Coefficients. Journal of Nonlinear Modeling and Analysis, [S. l.], v. 2, n. 4, p. 525–540, 2024. DOI: 10.12150/jnma.2020.525. Disponível em: https://global-sci.com/index.php/jnma/article/view/13575. Acesso em: 5 dec. 2025.