@misc{indiciaef2e56a655b40,
  title = {Non-contact ultrasonic techniques.},
  author = {Robert E Green},
  year = {2004},
  doi = {10.1016/j.ultras.2004.01.101},
  url = {https://pubmed.ncbi.nlm.nih.gov/15047255/},
  note = {Source identifier: 15047255}
}