@misc{indiciae177e061128a4,
  title = {Sources of groundwater based on Helium analyses in and near the freshwater/saline-water transition zone of the San Antonio segment of the Edwards Aquifer, South-Central Texas, 2002-03},
  author = {Andrew G. Hunt and Rebecca B. Lambert and Lynne Fahlquist},
  year = {2010},
  doi = {10.3133/sir20105030},
  url = {https://pubs.usgs.gov/publication/sir20105030},
  note = {Source identifier: sir20105030}
}