@misc{indiciae7a999900b024,
  title = {A TONOGRAPHIC RECORDER.},
  author = {R E CHRISTENSEN},
  year = {1963},
  doi = {10.1016/0002-9394(63)91868-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/14061612/},
  note = {Source identifier: 14061612}
}