@misc{indiciae6fb0d80684ce,
  title = {A precision heart rate meter calibrator.},
  author = {G W Janes and M H Paul and H U Wessel},
  year = {1969},
  doi = {10.1152/jappl.1969.27.5.736},
  url = {https://pubmed.ncbi.nlm.nih.gov/5360455/},
  note = {Source identifier: 5360455}
}