@misc{indiciaefaace4cc0b5d,
  title = {Audio testing and therapeutic devices.},
  author = {W E Chapman},
  year = {1969},
  doi = {10.1080/00325481.1969.11697162},
  url = {https://pubmed.ncbi.nlm.nih.gov/5789396/},
  note = {Source identifier: 5789396}
}