@misc{indiciaeffbe74eae932,
  title = {Program SPDIKE for calculation of self-potential anomalies near vertical dikes},
  author = {D.V. Fitterman},
  year = {1982},
  doi = {10.3133/ofr82470},
  url = {https://pubs.usgs.gov/publication/ofr82470},
  note = {Source identifier: ofr82470}
}