@misc{indiciae0a6614205318,
  title = {Chaotic dynamics in classical s-wave helium.},
  author = {Z Q Bai and Y Gu},
  year = {1999},
  doi = {10.1103/physreve.60.3866},
  url = {https://pubmed.ncbi.nlm.nih.gov/11970221/},
  note = {Source identifier: 11970221}
}