@misc{indiciaee4015e6741ee,
  title = {A new ultrasonic imaging system using time delay spectrometry},
  author = {Heyser, R. C. and Le Croissette, D. H.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19750036930},
  note = {Source identifier: 19750036930}
}