PERESTYUK, N. A. Conditions for the Existence of Nonoscillating Solutions of Nonlinear Differential Equations with Delay and Pulse Influence in a Banach Space. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 55, n. 6, p. 790–798, 2003. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3953. Acesso em: 14 apr. 2025.