@misc{indiciae45106d06820e,
  title = {Ancient granite gneiss in the Black Hills, South Dakota},
  author = {R. E. Zartman and J.J. Norton and T. W. Stern},
  year = {1964},
  doi = {10.1126/science.145.3631.479},
  url = {https://pubs.usgs.gov/publication/70010765},
  note = {Source identifier: 70010765}
}