@misc{indiciaeeeb65d8caa34,
  title = {Aeroelastic optimization of a helicopter rotor using an efficient sensitivity analysis},
  author = {Lim, Joon W. and Chopra, Inderjit},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910048906},
  note = {Source identifier: 19910048906}
}