@misc{indiciae5620b72dc1e9,
  title = {[Experimental studies on ultrasonic echo laminography].},
  author = {R Hünig and H Frommhold},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/5390629/},
  note = {Source identifier: 5390629}
}