Stability in neutral nonlinear differential equations with functional delay using Krasnoselskii-Burton’s fixed-point. Nonlinear Studies, [S. l.], v. 21, n. 4, 2014. Disponível em: https://www.nonlinearstudies.com/index.php/nonlinear/article/view/974. Acesso em: 1 mar. 2026.