@misc{indiciaec1704c4baeaf,
  title = {LF336 lift fan modification and acoustic test program},
  author = {Kazin, S. B. and Volk, L. J.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720009354},
  note = {Source identifier: 19720009354}
}