@misc{indiciaebcfcaa07ac6b,
  title = {Use of geophysical data to assess scour development},
  author = {Gary Placzek and Peter F. Haeni and Roy Trent},
  year = {1993},
  url = {https://pubs.usgs.gov/publication/70017996},
  note = {Source identifier: 70017996}
}