@misc{indiciae69f5b83b0e9d,
  title = {Ultrasonic visualization system employing new scanning and presentation methods.},
  author = {W J Fry and G H Leichner and D Okuyama and F J Fry and E K Fry},
  year = {1968},
  doi = {10.1121/1.1911265},
  url = {https://pubmed.ncbi.nlm.nih.gov/4972431/},
  note = {Source identifier: 4972431}
}