@misc{indiciae81ebde9ac1d7,
  title = {Active vibration control for flexible rotor by optimal direct-output feedback control},
  author = {Nonami, Kenzou and Dirusso, Eliseo and Fleming, David P.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890013234},
  note = {Source identifier: 19890013234}
}