RYPKA, M. Stability of multivalued attractor. Topological Methods in Nonlinear Analysis, [S. l.], v. 53, n. 1, p. 97–109, 2019. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2019.002. Acesso em: 22 jul. 2024.