@misc{indiciae9403d162ebc6,
  title = {Isotopic composition of atmospheric hydrogen and methane},
  author = {A. E. Bainbridge and H. E. Suess and I. Friedman},
  year = {1961},
  doi = {10.1038/192648a0},
  url = {https://pubs.usgs.gov/publication/70010662},
  note = {Source identifier: 70010662}
}