@misc{indiciaec7d2a745a2fd,
  title = {Efficient sensitivity analysis and optimization of a helicopter rotor},
  author = {Lim, Joon W. and Chopra, Inderjit},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890015784},
  note = {Source identifier: 19890015784}
}