@misc{indiciae954962c1a966,
  title = {Propulsion system noise reduction},
  author = {Feiler, C. E. and Heidelberg, L. J. and Karchmer, A. M. and Lansing, D. L. and Miller, B. A. and Rice, E. J.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750022996},
  note = {Source identifier: 19750022996}
}