@misc{indiciae2400fde07ad0,
  title = {Stable isotope deltas: Tiny, yet robust signatures in nature},
  author = {Willi A. Brand and Tyler B. Coplen},
  year = {2012},
  doi = {10.1080/10256016.2012.666977},
  url = {https://pubs.usgs.gov/publication/70043329},
  note = {Source identifier: 70043329}
}