@misc{indiciaeeb1fa44d45f6,
  title = {An electronic circuit that detects left ventricular ejection events by processing the arterial pressure waveform},
  author = {Gebben, V. D. and Webb, J. A., Jr.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720008367},
  note = {Source identifier: 19720008367}
}