TY  - RPRT
TI  - Attenuation provided by four different audiometric earphone systems.
AU  - T Frank
AU  - D C Wright
PY  - 1990
DO  - 10.1097/00003446-199002000-00014
UR  - https://pubmed.ncbi.nlm.nih.gov/2307308/
ID  - 2307308
ER  -