TY  - RPRT
TI  - Spectral phonocardiography.
AU  - V A McKUSICK
PY  - 1959
DO  - 10.1016/0002-9149(59)90248-6
UR  - https://pubmed.ncbi.nlm.nih.gov/13670121/
ID  - 13670121
ER  -