@misc{indiciaee885c56a8fc1,
  title = {Design and application of an electromagnetic vibrator seismic source},
  author = {S.S. Haines},
  year = {2006},
  doi = {10.2113/jeeg11.1.9},
  url = {https://pubs.usgs.gov/publication/70030670},
  note = {Source identifier: 70030670}
}