@misc{indiciae31c54a18579e,
  title = {Coupled rotor/airframe vibration analysis program manual. Volume 2: Sample input and output listings},
  author = {Cassarino, S. and Sopher, R.},
  year = {1982},
  url = {https://ntrs.nasa.gov/citations/19820024090},
  note = {Source identifier: 19820024090}
}