@misc{indiciae035399bb7150,
  title = {Comparability and reproducibility of biomarker ratio values measured by GC-QQQ-MS},
  author = {Katherine L. French and Arne Leider and Christian Hallmann},
  year = {2020},
  doi = {10.1016/j.orggeochem.2020.104124},
  url = {https://pubs.usgs.gov/publication/70215257},
  note = {Source identifier: 70215257}
}