TY  - RPRT
TI  - Steady state spherically focused, circular aperture beam patterns.
AU  - Albert Goldstein
PY  - 2006
DO  - 10.1016/j.ultrasmedbio.2006.06.013
UR  - https://pubmed.ncbi.nlm.nih.gov/17045863/
ID  - 17045863
ER  -