@misc{indiciae8d8c4c7d894c,
  title = {The periodic structure of the natural record, and nonlinear dynamics},
  author = {H. R. Shaw},
  year = {2011},
  doi = {10.1029/eo068i050p01651},
  url = {https://pubs.usgs.gov/publication/70014751},
  note = {Source identifier: 70014751}
}