@misc{indiciae47d7753bf364,
  title = {Carbon isotope composition of ambient CO 2 and recycling: a matrix simulation model},
  author = {Leonel da Silveira Lobo Sternberg and Donald L. DeAngelis},
  year = {2002},
  doi = {10.1016/s0304-3800(02)00055-8},
  url = {https://pubs.usgs.gov/publication/70161982},
  note = {Source identifier: 70161982}
}