@misc{indiciaebb9844bd475d,
  title = {Probability of Unmixed Young Groundwater (defined using chlorofluorocarbon-11 concentrations and tritium activities) in the Eagle River Watershed Valley-Fill Aquifer, Eagle County, North-Central Colorado, 2006-2007},
  author = {Michael G. Rupert and Niel Plummer},
  year = {2009},
  doi = {10.3133/ds460},
  url = {https://pubs.usgs.gov/publication/ds460},
  note = {Source identifier: ds460}
}