@misc{indiciae07804dbfac81,
  title = {Measuring contemporary crustal motions; NASA’s Crustal Dynamics Project},
  author = {H. V. Frey and J. M. Bosworth},
  year = {1988},
  url = {https://pubs.usgs.gov/publication/70162664},
  note = {Source identifier: 70162664}
}