@misc{indiciaecabecd03076a,
  title = {Numerical simulations of three-dimensional rotor blade-vortex interactions},
  author = {Hassan, A. A. and Charles, B. D.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900059824},
  note = {Source identifier: 19900059824}
}