@misc{indiciae933a1c9c8074,
  title = {Identification of XV-15 aeroelastic modes using frequency-domain methods},
  author = {Acree, Cecil W., Jr. and Tischler, Mark B.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900012440},
  note = {Source identifier: 19900012440}
}