@misc{indiciae766562b2fc6f,
  title = {A shock wave study of Coconino sandstone},
  author = {Gregson, V. G. and Jones, A. and Shipman, F. H.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710017543},
  note = {Source identifier: 19710017543}
}