@misc{indiciae8a3f2070129f,
  title = {Four-trace echoencephalography.},
  author = {A C Hudson and B J Trollope},
  year = {1971},
  doi = {10.1016/0041-624x(71)90120-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5555102/},
  note = {Source identifier: 5555102}
}