@misc{indiciaeadb371af2e24,
  title = {Molecular beam facility for studying mass spectrometer performance},
  author = {Ballenthin, J. O. and Nier, A. O.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810057742},
  note = {Source identifier: 19810057742}
}