@misc{indiciae40f424b5bb34,
  title = {Helicopter roll control effectiveness criteria program summary},
  author = {Heffley, Robert K. and Bourne, Simon M. and Mnich, Marc A.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890000675},
  note = {Source identifier: 19890000675}
}