@misc{indiciaed7f07bd38a98,
  title = {The Earth's elements.},
  author = {R P Kirshner},
  year = {1994},
  doi = {10.1038/scientificamerican1094-58},
  url = {https://pubmed.ncbi.nlm.nih.gov/11536644/},
  note = {Source identifier: 11536644}
}