@misc{indiciae8a7792ff776e,
  title = {Approximation to cutoffs of higher modes of Rayleigh waves for a layered earth model},
  author = {Y. Xu and J. Xia and R. D. Miller},
  year = {2009},
  doi = {10.1007/s00024-008-0443-4},
  url = {https://pubs.usgs.gov/publication/70036006},
  note = {Source identifier: 70036006}
}