@misc{indiciaef6e70386d120,
  title = {A note on acoustic hearing aids.},
  author = {B C Grover},
  year = {1977},
  doi = {10.3109/03005367709078837},
  url = {https://pubmed.ncbi.nlm.nih.gov/922230/},
  note = {Source identifier: 922230}
}