@misc{indiciae472a7e261fa7,
  title = {Helium and neon isotopes in stratospheric particles},
  author = {Nier, A. O. and Schlutter, D. J.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910041006},
  note = {Source identifier: 19910041006}
}