@misc{indiciae74fb416d0192,
  title = {Recording pulsations in echo-encephalography.},
  author = {M D Vlieger and P Megens and J Van der Sluys},
  year = {1974},
  doi = {10.1007/bf02478608},
  url = {https://pubmed.ncbi.nlm.nih.gov/4142950/},
  note = {Source identifier: 4142950}
}