@misc{indiciae485480f5b028,
  title = {Level spacings and periodic orbits.},
  author = {S Keppeler},
  year = {2001},
  doi = {10.1103/physreve.64.027201},
  url = {https://pubmed.ncbi.nlm.nih.gov/11497747/},
  note = {Source identifier: 11497747}
}