@misc{indiciae3b94de87973d,
  title = {Safety in flight operations.},
  author = {Fielder, D. E. and Hodge, J. D. and Roach, J. W.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670064242},
  note = {Source identifier: 19670064242}
}