@misc{indiciae7b428401439f,
  title = {Lead and strontium isotope studies of the Boulder Batholith, Southwestern Montana},
  author = {B. R. Doe and R.I. Tilling and C. E. Hedge and M. R. Klepper},
  year = {1968},
  doi = {10.2113/gsecongeo.63.8.884},
  url = {https://pubs.usgs.gov/publication/70206752},
  note = {Source identifier: 70206752}
}