@misc{indiciaeed7171e41a16,
  title = {A technique using a nonlinear helicopter model for determining trims and derivatives},
  author = {Ostroff, A. J. and Downing, D. R. and Rood, W. J.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19760017177},
  note = {Source identifier: 19760017177}
}