@misc{indiciae1bd1c5a98849,
  title = {Experimental results in ultrasonic tomography using a filtered backpropagation algorithm.},
  author = {N Sponheim and I Johansen},
  year = {1991},
  doi = {10.1177/016173469101300103},
  url = {https://pubmed.ncbi.nlm.nih.gov/1998248/},
  note = {Source identifier: 1998248}
}