@misc{indiciae72067b5b3bb8,
  title = {Digital computing cardiotachometer},
  author = {Smith, H. E. and Rasquin, J. R. and Taylor, R. A.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740004665},
  note = {Source identifier: 19740004665}
}