@misc{indiciaeb60ccea97cc4,
  title = {Comparison of three techniques for the determination of uranium and thorium in rocks},
  author = {R. J. Hart and D.L. Reid and J. S. Stuckless and H.J. Welke},
  year = {1980},
  doi = {10.1016/0009-2541(80)90030-3},
  url = {https://pubs.usgs.gov/publication/70012296},
  note = {Source identifier: 70012296}
}