TY  - RPRT
TI  - Vocal fatigue: current knowledge and future directions.
AU  - Nathan V Welham
AU  - Margaret A Maclagan
PY  - 2003
DO  - 10.1016/s0892-1997(03)00033-x
UR  - https://pubmed.ncbi.nlm.nih.gov/12705816/
ID  - 12705816
ER  -