@misc{indiciaeaee035713e59,
  title = {Arithmetical method to detect integrability in maps.},
  author = {J A G Roberts and F Vivaldi},
  year = {2003},
  doi = {10.1103/physrevlett.90.034102},
  url = {https://pubmed.ncbi.nlm.nih.gov/12570490/},
  note = {Source identifier: 12570490}
}