SLYUSARCHUK, V. Yu. Conditions for the existence and uniqueness of bounded solutions of nonlinear differential equations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 61, n. 2, p. 268–279, 2009. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3018. Acesso em: 6 dec. 2025.