@misc{indiciae99aa2a54785e,
  title = {Guidelines and recommended terms for expression of stable-isotope-ratio and gas-ratio measurement results},
  author = {Tyler B. Coplen},
  year = {2011},
  doi = {10.1002/rcm.5129},
  url = {https://pubs.usgs.gov/publication/70043332},
  note = {Source identifier: 70043332}
}