@misc{indiciae8cb9843de6b2,
  title = {Radiometric age determinations on Pliocene/Pleistocene formations in the lower Omo basin, Ethiopia},
  author = {F. H. Brown and K. R. Lajoie},
  year = {1971},
  doi = {10.1038/229483a0},
  url = {https://pubs.usgs.gov/publication/70001500},
  note = {Source identifier: 70001500}
}