Homoclinic Solutions for a Class of Hamiltonian Systems with Small External Perturbations. Communications in Mathematical Research, [S. l.], v. 41, n. 2, p. 148–172, 2025. DOI: 10.4208/cmr.2025-0016. Disponível em: https://www.global-sci.com/index.php/cmr/article/view/9145. Acesso em: 5 dec. 2025.