SAMOILENKO, A. M.; SLYUSARCHUK, V. V. Discrete dynamical systems with invariant asymptotically stable toroidal manifold. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 51, n. 4, p. 466–471, 1999. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4632. Acesso em: 6 dec. 2025.