@misc{indiciae7bd5088f2ad5,
  title = {xwell\_radar; a program for calculating crosswell radar traces for layered media},
  author = {Karl J. Ellefsen},
  year = {2000},
  doi = {10.3133/ofr0039},
  url = {https://pubs.usgs.gov/publication/ofr0039},
  note = {Source identifier: ofr0039}
}