@misc{indiciaead9a7f3f83ee,
  title = {Research on a ferroacoustic information storage system},
  author = {Freytag, R. W. and Gratian, J. W.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19650016651},
  note = {Source identifier: 19650016651}
}