Bernini, Federico, Bartosz Bieganowski, and Daniel Strzelecki. “Note on Homoclinic Solutions to Nonautonomous Hamiltonian Systems With Sign-Changing Nonlinear Part”. Topological Methods in Nonlinear Analysis (March 22, 2026): 1–18. Accessed April 9, 2026. https://apcz.umk.pl/TMNA/article/view/70079.