@misc{indiciaea88abb45f1c8,
  title = {Shocked quartz grains at the Cretaceous-Tertiary boundary - Not volcanic or atmospherically transported},
  author = {R. Seitz and B.F. Bohor},
  year = {1988},
  doi = {10.1007/bf00367322},
  url = {https://pubs.usgs.gov/publication/70014371},
  note = {Source identifier: 70014371}
}