@misc{indiciae5bbf9739f249,
  title = {An interpretation of induced electric currents in long pipelines caused by natural geomagnetic sources of the upper atmosphere},
  author = {W.H. Campbell},
  year = {1986},
  doi = {10.1007/bf01904061},
  url = {https://pubs.usgs.gov/publication/70015601},
  note = {Source identifier: 70015601}
}