@misc{indiciaee24a0cc290ec,
  title = {Tissue identification by ultrasound},
  author = {Lecroissette, D. H. and Heyser, R. C. and Gammell, P. M. and Wilson, R. L.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19780025773},
  note = {Source identifier: 19780025773}
}