BERNINI, Federico, BIEGANOWSKI, Bartosz and STRZELECKI, Daniel. Note on homoclinic solutions to nonautonomous Hamiltonian systems with sign-changing nonlinear part. Topological Methods in Nonlinear Analysis. Online. 22 March 2026. pp. 1 - 18. [Accessed 9 April 2026]. DOI 10.12775/TMNA.2025.034.