@misc{indiciaececc9df21e3b,
  title = {Residence times in river basins as determined by analysis of long-term tritium records},
  author = {R. L. Michel},
  year = {1992},
  doi = {10.1016/0022-1694(92)90117-e},
  url = {https://pubs.usgs.gov/publication/70016554},
  note = {Source identifier: 70016554}
}