@misc{indiciae4cb40fbd3049,
  title = {Ultrasonic Device Would Open Pipe Bombs},
  author = {El-Raheb, Michael S. and Adams, Marc A. and Zwissler, James G.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910000480},
  note = {Source identifier: 19910000480}
}