@misc{indiciaefd11e8906c91,
  title = {Diagnostic Doppler instruments.},
  year = {1973},
  doi = {10.1016/0041-624x(73)90589-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/4714716/},
  note = {Source identifier: 4714716}
}