@misc{indiciae85638d22bd60,
  title = {Unsteady forces on counter-rotating propeller blades},
  author = {Lesieutre, D. J. and Sullivan, J. P.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860053089},
  note = {Source identifier: 19860053089}
}