TY  - RPRT
TI  - Experimental results in ultrasonic tomography using a filtered backpropagation algorithm.
AU  - N Sponheim
AU  - I Johansen
PY  - 1991
DO  - 10.1177/016173469101300103
UR  - https://pubmed.ncbi.nlm.nih.gov/1998248/
ID  - 1998248
ER  -