@misc{indiciae95ddf52660d2,
  title = {Linearized inversion of reflection traveltimes},
  author = {Myung W. Lee and Warren F. Agena},
  year = {1991},
  doi = {10.3133/b1965},
  url = {https://pubs.usgs.gov/publication/b1965},
  note = {Source identifier: b1965}
}