@misc{indiciaeeb60af19529a,
  title = {Estimation of near-surface shear-wave velocity by inversion of Rayleigh waves},
  author = {J. Xia and R. D. Miller and C.B. Park},
  year = {1999},
  doi = {10.1190/1.1444578},
  url = {https://pubs.usgs.gov/publication/70021669},
  note = {Source identifier: 70021669}
}