TY  - RPRT
TI  - Ultrasonic tissue characterization.
AU  - M Linzer
AU  - S J Norton
PY  - 1982
DO  - 10.1146/annurev.bb.11.060182.001511
UR  - https://pubmed.ncbi.nlm.nih.gov/7049066/
ID  - 7049066
ER  -