@misc{indiciae956c4aa57c46,
  title = {Empirical relations between elastic wavespeeds and density in the Earth's crust},
  author = {T.M. Brocher},
  year = {2005},
  doi = {10.1785/0120050077},
  url = {https://pubs.usgs.gov/publication/70027956},
  note = {Source identifier: 70027956}
}