SLYUSARCHUK, V. Yu. Conditions for the existence of almost periodic solutions of nonlinear differential equations in Banach spaces. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 2, p. 307–312, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2420. Acesso em: 14 apr. 2025.