@misc{indiciaed9113ecd6f79,
  title = {V/STOL hover stability impact on hover control task},
  author = {Whitaker, A. B. and Kelly, C. P. and Wittman, R. B. and Martorella, R. P.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780011159},
  note = {Source identifier: 19780011159}
}