@misc{indiciae3165e2764863,
  title = {Sharpness of upper-mantle discontinuities determined from high-frequency reflections},
  author = {H.M. Benz and J.E. Vidale},
  year = {1993},
  url = {https://pubs.usgs.gov/publication/70017357},
  note = {Source identifier: 70017357}
}