@misc{indiciae7620d95b93ff,
  title = {Atmospheric carbon dioxide concentrations before 2.2 billion years ago},
  author = {Rye, R. and Kuo, P. H. and Holland, H. D.},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/20040112220},
  note = {Source identifier: 20040112220}
}