@misc{indiciae26cb3b63c21f,
  title = {Radiogenic 4He as a conservative tracer in buried‐valley aquifers},
  author = {Stephen J. Van der Hoven and R. Erik Wright and David A. Carstens and Keith C. Hackley},
  year = {2005},
  doi = {10.1029/2004wr003857},
  url = {https://pubs.usgs.gov/publication/70027762},
  note = {Source identifier: 70027762}
}