@misc{indiciae5626bb95b4e2,
  title = {Hypervelocity impact of steel into Coconino Sandstone},
  author = {Eugene Merle Shoemaker and D. E. Gault and H. J. Moore and R. V. Lugn},
  year = {1963},
  doi = {10.2475/ajs.261.7.668},
  url = {https://pubs.usgs.gov/publication/70226769},
  note = {Source identifier: 70226769}
}