TY  - RPRT
TI  - Simple biofeedback device to reduce excessive vocal intensity.
AU  - R McGillivray
AU  - K Proctor-Williams
AU  - B McLister
PY  - 1994
DO  - 10.1007/bf02512536
UR  - https://pubmed.ncbi.nlm.nih.gov/7934264/
ID  - 7934264
ER  -