@misc{indiciae9c3de3069802,
  title = {Torus structure in higher-dimensional Hamiltonian systems.},
  author = {G Györgyi and FH Ling and G Schmidt},
  year = {1989},
  doi = {10.1103/physreva.40.5311},
  url = {https://pubmed.ncbi.nlm.nih.gov/9902798/},
  note = {Source identifier: 9902798}
}