DING, B.; DING, C. Poincaré recurrence theorem in impulsive systems. Topological Methods in Nonlinear Analysis, [S. l.], v. 49, n. 2, p. 577–585, 2017. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2016.091. Acesso em: 5 jul. 2024.