TY  - RPRT
TI  - Visual lung-sound characterization by time-expanded wave-form analysis.
AU  - R L Murphy
AU  - S K Holford
AU  - W C Knowler
PY  - 1977
DO  - 10.1056/nejm197704282961704
UR  - https://pubmed.ncbi.nlm.nih.gov/846543/
ID  - 846543
ER  -