TY  - RPRT
TI  - Harmonic levels and vowel roughness.
AU  - F W Emanuel
AU  - R L Whitehead
PY  - 1979
DO  - 10.1044/jshr.2204.829
UR  - https://pubmed.ncbi.nlm.nih.gov/513690/
ID  - 513690
ER  -