DALBONO, F. Sign-preserving solutions for a class of asymptotically linear systems of second-order ordinary differential equations. Topological Methods in Nonlinear Analysis, [S. l.], v. 59, n. 1, p. 163–191, 2022. DOI: 10.12775/TMNA.2021.023. Disponível em: https://apcz.umk.pl/TMNA/article/view/37621. Acesso em: 3 jul. 2024.