@misc{indiciaefb51ad39241e,
  title = {Fan noise and performance},
  author = {Kramer, J. J. and Hartmann, M. J. and Leonard, B. R. and Klapproth, J. F. and Sofrin, T. G.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730003287},
  note = {Source identifier: 19730003287}
}