@misc{indiciae8e8230c79095,
  title = {Unsteady wake effects on progressing/regressing forced rotor flapping modes.},
  author = {Hohenemser, K. H. and Crews, S. T.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720058684},
  note = {Source identifier: 19720058684}
}