@misc{indiciae7aae04cfd6c1,
  title = {Probe-tube microphone assembly.},
  author = {E Villchur and M C Killion},
  year = {1975},
  doi = {10.1121/1.380431},
  url = {https://pubmed.ncbi.nlm.nih.gov/1110288/},
  note = {Source identifier: 1110288}
}