@misc{indiciaece556542fdaa,
  title = {Attenuation provided by four different audiometric earphone systems.},
  author = {T Frank and D C Wright},
  year = {1990},
  doi = {10.1097/00003446-199002000-00014},
  url = {https://pubmed.ncbi.nlm.nih.gov/2307308/},
  note = {Source identifier: 2307308}
}