@misc{indiciae3fc36ffb76cf,
  title = {Pick\_sw: a program for interactive picking of S-wave data, version 2.00},
  author = {Karl J. Ellefsen},
  year = {2002},
  doi = {10.3133/ofr02176},
  url = {https://pubs.usgs.gov/publication/ofr02176},
  note = {Source identifier: ofr02176}
}