TY  - RPRT
TI  - Hearing-aid fitting protocol.
AU  - L J Upfold
AU  - M F Smither
PY  - 1981
DO  - 10.3109/03005368109081435
UR  - https://pubmed.ncbi.nlm.nih.gov/7296096/
ID  - 7296096
ER  -