@misc{indiciaebdb882ae836d,
  title = {An automated atmospheric sampling system operating on 747 airliners},
  author = {Perkins, P. and Gustafsson, U. R. C.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750023546},
  note = {Source identifier: 19750023546}
}