JANCZEWSKA, Joanna, STAROSTKA, Maciej and WATERSTRAAT, Nils. Local and global bifurcation for periodic solutions of hamiltonian systems via comparison theory for the spectral flow. Topological Methods in Nonlinear Analysis. Online. 22 March 2026. pp. 1 - 18. [Accessed 9 April 2026]. DOI 10.12775/TMNA.2025.039.