@misc{indiciae5ee23a923202,
  title = {Measuring the reflection coefficient for ultrasonic interfaces.},
  author = {R L Pimmel},
  year = {1972},
  doi = {10.1016/0041-624x(72)90139-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/4652745/},
  note = {Source identifier: 4652745}
}