@misc{indiciae3b58b8c79965,
  title = {Computer programs for forward and inverse modeling of acoustic and electromagnetic data},
  author = {Karl J. Ellefsen},
  year = {2011},
  doi = {10.3133/ofr20111124},
  url = {https://pubs.usgs.gov/publication/ofr20111124},
  note = {Source identifier: ofr20111124}
}