@misc{indiciaeaf5c2431c438,
  title = {Variability in audiometric recording.},
  author = {R W Howell and B P Hartley},
  year = {1972},
  doi = {10.1136/oem.29.4.432},
  url = {https://pubmed.ncbi.nlm.nih.gov/4673941/},
  note = {Source identifier: 4673941}
}