@misc{indiciae295ab02d164c,
  title = {Carbon isotopes in biological carbonates: Respiration and photosynthesis},
  author = {T.A. McConnaughey and J. Burdett and J. F. Whelan and C. K. Paull},
  year = {1997},
  doi = {10.1016/s0016-7037(96)00361-4},
  url = {https://pubs.usgs.gov/publication/70020140},
  note = {Source identifier: 70020140}
}