@misc{indiciaefa9791cca4f1,
  title = {An ancient depleted mantle sample from a 42-Ma dike in Montana: Constraints on persistence of the lithosphere during Eocene Magmatism},
  author = {F.O. Dudas and S. S. Harlan},
  year = {1999},
  doi = {10.1086/314349},
  url = {https://pubs.usgs.gov/publication/70021588},
  note = {Source identifier: 70021588}
}