@misc{indiciae9195bea7dfbf,
  title = {Hingeless helicopter rotor with improved stability},
  author = {Ormiston, R. A. and Bousman, W. G. and Hodges, D. H. and Peters, D. A.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19770010086},
  note = {Source identifier: 19770010086}
}