@misc{indiciaea6c40c38a10d,
  title = {Lower-dimensional tori in reversible systems.},
  author = {M. B. Sevryuk},
  year = {1991},
  doi = {10.1063/1.165858},
  url = {https://pubmed.ncbi.nlm.nih.gov/12779908/},
  note = {Source identifier: 12779908}
}