@misc{indiciae1df46e69abfc,
  title = {The abundance of scandium in volcanic rocks, a preliminary estimate},
  author = {Verne Charles Fryklund and Michael Fleischer},
  year = {1963},
  doi = {10.1016/0016-7037(63)90017-6},
  url = {https://pubs.usgs.gov/publication/70220053},
  note = {Source identifier: 70220053}
}