@misc{indiciae6d1c4e5bc774,
  title = {Reference threshold levels for an ER-3A insert earphone.},
  author = {T Frank and M J Vavrek},
  year = {1992},
  url = {https://pubmed.ncbi.nlm.nih.gov/1571587/},
  note = {Source identifier: 1571587}
}