@misc{indiciaeddc77553a875,
  title = {Propeller flow visualization techniques},
  author = {Stefko, G. L. and Paulovich, F. J. and Greissing, J. P. and Walker, E. D.},
  year = {1982},
  url = {https://ntrs.nasa.gov/citations/19820024796},
  note = {Source identifier: 19820024796}
}