CORONA, Dario; GIAMBÒ, Roberto; GIANNONI, Fabio; PICCIONE, Paolo. On the relative category in the brake orbits problem. Topological Methods in Nonlinear Analysis, [S. l.], v. 61, n. 1, p. 199–215, 2023. DOI: 10.12775/TMNA.2022.057. Disponível em: https://apcz.umk.pl/TMNA/article/view/42926. Acesso em: 4 apr. 2025.