@misc{indiciae61a226001f20,
  title = {Determination of yttrium, lanthanum, cerium, neodymium, and ytterbium in test samples granite G-1 and diabase W-1 by a combined chemical-spectrochemical technique},
  author = {S. Berman},
  year = {1957},
  doi = {10.1016/0016-7037(57)90038-8},
  url = {https://pubs.usgs.gov/publication/70009858},
  note = {Source identifier: 70009858}
}