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. Vol. 67, no. 1, pp. 35 - 52. [Accessed 2 June 2026]. DOI 10.12775/TMNA.2025.034.