@misc{indiciaefbb32fdedc3f,
  title = {Tritium as an indicator of ground-water age in Central Wisconsin},
  author = {Kenneth R. Bradbury},
  year = {2005},
  doi = {10.1111/j.1745-6584.1991.tb00530.x},
  url = {https://pubs.usgs.gov/publication/70016659},
  note = {Source identifier: 70016659}
}