@misc{indiciae6dd7e852e3d7,
  title = {Sound generation by turbulence and surfaces in arbitrary motion.},
  author = {Hawkings, D. L. and Williams, J. E. F.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690049985},
  note = {Source identifier: 19690049985}
}