@misc{indiciae8745d6c956ed,
  title = {Aeroelastic analysis for helicopter rotor blades with time-variable, non-linear structural twist and multiple structural redundancy: Mathematical derivation and program user's manual},
  author = {Bielawa, R. L.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19770003613},
  note = {Source identifier: 19770003613}
}