@misc{indiciaea84636bf9b0a,
  title = {Relative concentrations of lanthanides in minerals of the bastnaesite group},
  author = {Michael Fleischer},
  year = {1978},
  doi = {10.3133/ofr78488},
  url = {https://pubs.usgs.gov/publication/ofr78488},
  note = {Source identifier: ofr78488}
}