@article{delshams2017examples,
  title={Examples of integrable and non-integrable systems on singular symplectic manifolds},
  author={Delshams, Amadeu and Kiesenhofer, Anna and Miranda, Eva},
  journal={Journal of Geometry and Physics},
  volume={115},
  pages={89--97},
  year={2017},
  publisher={Elsevier}
}