@misc{indiciaead1da4fda82e,
  title = {Diagenetic changes in the elemental composition of unrecrystallized mollusk shells},
  author = {P.C. Ragland and O. H. Pilkey and B. W. Blackwelder},
  year = {1979},
  doi = {10.1016/0009-2541(79)90088-3},
  url = {https://pubs.usgs.gov/publication/70012467},
  note = {Source identifier: 70012467}
}