@misc{indiciaec49620397dcb,
  title = {Bone-conduction vibrators. Calibration by input-voltage measurements.},
  author = {T J Fria and L W Keating},
  year = {1971},
  doi = {10.1001/archotol.1971.00770070350005},
  url = {https://pubmed.ncbi.nlm.nih.gov/5556268/},
  note = {Source identifier: 5556268}
}