SLYUSARCHUK, V. Yu. Method of local linear approximation in the theory of bounded solutions of nonlinear differential equations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 61, n. 11, p. 1541–1556, 2009. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3120. Acesso em: 6 dec. 2025.