Ultrasonic monitoring of decompression.

@article{Walder1968UltrasonicMO,
  title={Ultrasonic monitoring of decompression.},
  author={D. N. Walder and A N Evans and H V Hempleman},
  journal={Lancet},
  year={1968},
  volume={1 7548},
  pages={897-8}
}