@misc{indiciae4eef6620b10e,
  title = {A simple linear pulse-to-pulse cardiac tachometer.},
  author = {O Z Roy and R W Wehnert},
  year = {1974},
  doi = {10.1007/bf02477810},
  url = {https://pubmed.ncbi.nlm.nih.gov/4466996/},
  note = {Source identifier: 4466996}
}