@misc{indiciae1179a24dcad5,
  title = {Fabricating data: How substituting values for nondetects can ruin results, and what can be done about it},
  author = {D.R. Helsel},
  year = {2006},
  doi = {10.1016/j.chemosphere.2006.04.051},
  url = {https://pubs.usgs.gov/publication/70028920},
  note = {Source identifier: 70028920}
}