HROD, I. M. On the smoothness of bounded invariant manifolds of linear inhomogeneous extensions of dynamical systems. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 1, p. 136–139, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5373. Acesso em: 5 dec. 2025.