@misc{indiciaea22aa625a09e,
  title = {Determination of steroid hormones and related compounds in filtered and unfiltered water by solid-phase extraction, derivatization, and gas chromatography with tandem mass spectrometry},
  author = {William T. Foreman and James L. Gray and Rhiannon C. ReVello and Chris E. Lindley and Scott A. Losche and Larry B. Barber},
  year = {2012},
  doi = {10.3133/tm5b9},
  url = {https://pubs.usgs.gov/publication/tm5B9},
  note = {Source identifier: tm5B9}
}