@misc{indiciae08da78aeba5b,
  title = {Acoustic source identification using an inverse Helmholtz integral equation method},
  author = {Gardner, Bryce K. and Bernhard, Robert J.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890027729},
  note = {Source identifier: 19890027729}
}