@misc{indiciaec016e37a4d4a,
  title = {Transducers for ultrasonic limb plethysmography},
  author = {Nickell, W. T. and Wu, V. C. and Bhagat, P. K.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830051476},
  note = {Source identifier: 19830051476}
}