@misc{indiciaea3ee868be0f7,
  title = {Air pollution from aircraft},
  author = {Heywood, J. B. and Fay, J. A. and Chigier, N. A.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19790023669},
  note = {Source identifier: 19790023669}
}