@misc{indiciae3fa325bb5c9c,
  title = {Relationships between varve thickness and climatic parameters and paleoclimatic reconstruction},
  author = {James A. Perkins and John D. Sims},
  year = {1981},
  doi = {10.3133/ofr81952},
  url = {https://pubs.usgs.gov/publication/ofr81952},
  note = {Source identifier: ofr81952}
}