@misc{indiciaeb7ca3c81626b,
  title = {Advanced acoustic cavity technology},
  author = {Hines, W. S. and Oberg, C. L. and Kusak, L.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740023093},
  note = {Source identifier: 19740023093}
}