SLYUSARCHUK, V. Yu. Conditions for the existence of bounded solutions of nonlinear differential and functional differential equations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 62, n. 6, p. 837–846, 2010. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2914. Acesso em: 5 dec. 2025.