@misc{indiciaebe95c6aa4874,
  title = {Three whole-wood isotopic reference materials, USGS54, USGS55, and USGS56, for δ2H, δ13C, δ15N, and δ18O measurements},
  author = {Haiping Qi and Tyler B. Coplen and James A. Jordan},
  year = {2016},
  doi = {10.1016/j.chemgeo.2016.07.017},
  url = {https://pubs.usgs.gov/publication/70182733},
  note = {Source identifier: 70182733}
}