@misc{indiciaec0c7f0f1c1b1,
  title = {Relative concentration of lanthanides in titanite (sphene)},
  author = {Michael Fleischer},
  year = {1978},
  doi = {10.3133/ofr78530},
  url = {https://pubs.usgs.gov/publication/ofr78530},
  note = {Source identifier: ofr78530}
}