@misc{indiciaec41763084bad,
  title = {Isotopic composition of strontium in sea water throughout Phanerozoic time},
  author = {Z. E. Peterman and C. E. Hedge and H. A. Tourtelot},
  year = {1970},
  doi = {10.1016/0016-7037(70)90154-7},
  url = {https://pubs.usgs.gov/publication/70010192},
  note = {Source identifier: 70010192}
}