@misc{indiciae0c51d8b3c6a3,
  title = {Theoretical Wenner and Schlumberger vertical electrical soundings},
  author = {David V. Haines and D. L. Campbell},
  year = {1981},
  url = {https://pubs.usgs.gov/publication/70047797},
  note = {Source identifier: 70047797}
}