@misc{indiciaeddbf4cc2a780,
  title = {Complications with using ratios for environmental data: Comparing enantiomeric ratios (ERs) and enantiomer fractions (EFs)},
  author = {E.M. Ulrich and D.R. Helsel and W.T. Foreman},
  year = {2003},
  doi = {10.1016/s0045-6535(03)00538-1},
  url = {https://pubs.usgs.gov/publication/70024877},
  note = {Source identifier: 70024877}
}