@misc{indiciae78b20a5d3715,
  title = {Phase-locked loop techniques applied to ultrasonic Doppler signal processing.},
  author = {A Sainz and V C Roberts and G Pinardi},
  year = {1976},
  doi = {10.1016/0041-624x(76)90087-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/779193/},
  note = {Source identifier: 779193}
}