MAMO, N. G. Neumann-type boundary value problem associated with Hamiltonian systems. Topological Methods in Nonlinear Analysis, [S. l.], v. 64, n. 1, p. 151–162, 2024. DOI: 10.12775/TMNA.2023.051. Disponível em: https://apcz.umk.pl/TMNA/article/view/55207. Acesso em: 12 nov. 2024.