@misc{indiciae2a07cff1879b,
  title = {Circuit for detecting initial systole and dicrotic notch},
  author = {Gebben, V. D. and Webb, J. A., Jr.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19750005459},
  note = {Source identifier: 19750005459}
}