@misc{indiciae5909c512bda9,
  title = {Helicopter Pilot Performance for Discrete-maneuver Flight Tasks},
  author = {Heffley, R. K. and Bourne, S. M. and Hindson, W. S.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19850006193},
  note = {Source identifier: 19850006193}
}