@misc{indiciae03fcd1af6a2b,
  title = {Pulse transducer with artifact signal attenuator},
  author = {Cash, W. H., Jr. and Polhemus, J. T.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19800015477},
  note = {Source identifier: 19800015477}
}