@misc{indiciae90ff82945737,
  title = {Mineralogic evidence for an impact event at the Cretaceous-Tertiary boundary},
  author = {B.F. Bohor and E.E. Foord and P.J. Modreski and Don M. Triplehorn},
  year = {1984},
  doi = {10.1126/science.224.4651.867},
  url = {https://pubs.usgs.gov/publication/70014029},
  note = {Source identifier: 70014029}
}