@misc{indiciae086ba76d3904,
  title = {Ultrasonic imaging.},
  author = {C R Hill},
  year = {1976},
  doi = {10.1088/0022-3735/9/3/001},
  url = {https://pubmed.ncbi.nlm.nih.gov/768449/},
  note = {Source identifier: 768449}
}