@misc{indiciaea732e329a91a,
  title = {Ages of fossil bones from British interglacial sites},
  author = {Barney J. Szabo and D. Collins},
  year = {1975},
  doi = {10.1038/254680a0},
  url = {https://pubs.usgs.gov/publication/70001235},
  note = {Source identifier: 70001235}
}