@misc{indiciae94d43b6507cb,
  title = {Microprocessor-based cardiotachometer},
  author = {Crosier, W. G. and Donaldson, J. A.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19800000501},
  note = {Source identifier: 19800000501}
}