@misc{indiciae38135ace8ee0,
  title = {Backscatter coefficient measurements using a reference phantom to extract depth-dependent instrumentation factors.},
  author = {L X Yao and J A Zagzebski and E L Madsen},
  year = {1990},
  doi = {10.1177/016173469001200105},
  url = {https://pubmed.ncbi.nlm.nih.gov/2184569/},
  note = {Source identifier: 2184569}
}