@misc{indiciaedf383bfb7ba7,
  title = {Use of radium isotopes to determine the age and origin of radioactive barite at oil-field production sites},
  author = {R. A. Zielinski and J. K. Otton and J. R. Budahn},
  year = {2001},
  doi = {10.1016/s0269-7491(00)00188-3},
  url = {https://pubs.usgs.gov/publication/70023262},
  note = {Source identifier: 70023262}
}