@misc{indiciae205794444ff8,
  title = {Tracing ground water input to base flow using sulfate (S, O) isotopes},
  author = {A. Gu and F. Gray and C.J. Eastoe and L.M. Norman and O. Duarte and A. Long},
  year = {2008},
  doi = {10.1111/j.1745-6584.2008.00437.x},
  url = {https://pubs.usgs.gov/publication/70033310},
  note = {Source identifier: 70033310}
}