The Poincaré-Birkhoff Theorem for a Class of Degenerate Planar Hamiltonian Systems
- Zanolin, F.
- López-Gómez, J.
- Muñoz-Hernández, E.
ISSN: 1536-1365
Year of publication: 2021
Volume: 21
Issue: 3
Pages: 489-499
Type: Article
Journal:
Advanced Nonlinear Studies