TY  - RPRT
TI  - Tissue harmonic imaging: why does it work?
AU  - J D Thomas
AU  - D N Rubin
PY  - 1998
DO  - 10.1016/s0894-7317(98)70055-0
UR  - https://pubmed.ncbi.nlm.nih.gov/9719092/
ID  - 9719092
ER  -