@misc{indiciae47c7443ce8b3,
  title = {Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-A method supplement for the determination of Fipronil and degradates in water by gas chromatography/mass spectrometry},
  author = {James F. Madsen and Mark W. Sandstrom and Steven D. Zaugg},
  year = {2002},
  doi = {10.3133/ofr02462},
  url = {https://pubs.usgs.gov/publication/ofr02462},
  note = {Source identifier: ofr02462}
}