@misc{indiciae07cce385bf1b,
  title = {Multiple gas analyses using a mobile mass spectrometer},
  author = {J. H. McCarthy and R. C. Bigelow},
  year = {1990},
  doi = {10.1016/0375-6742(90)90104-i},
  url = {https://pubs.usgs.gov/publication/70016142},
  note = {Source identifier: 70016142}
}