@misc{indiciaebd5976e00937,
  title = {Analysis of the cretaceous-tertiary boundary clay: Methodology questioned},
  author = {B.F. Bohor},
  year = {1984},
  doi = {10.1126/science.223.4632.190},
  url = {https://pubs.usgs.gov/publication/70012841},
  note = {Source identifier: 70012841}
}