@misc{indiciaef8a233c7b571,
  title = {Surface wave tomography of North America and the Caribbean using global and regional broad-band networks: Phase velocity maps and limitations of ray theory},
  author = {S. Godey and R. Snieder and A. Villasenor and H.M. Benz},
  year = {2003},
  doi = {10.1046/j.1365-246x.2003.01866.x},
  url = {https://pubs.usgs.gov/publication/70025993},
  note = {Source identifier: 70025993}
}