@misc{indiciaee60b0ec33358,
  title = {234U/238U as a ground-water tracer, SW Nevada-SE California},
  author = {K.R. Ludwig and Z. E. Peterman and K. R. Simmons and E. D. Gutentag},
  year = {1993},
  url = {https://pubs.usgs.gov/publication/70017848},
  note = {Source identifier: 70017848}
}