@misc{indiciaee9f1e0396c7c,
  title = {Gravity enhanced acoustic levitation method and apparatus},
  author = {Barmatz, M. B. and Allen, J. L. and Granett, D.},
  year = {1985},
  url = {https://ntrs.nasa.gov/citations/19850021381},
  note = {Source identifier: 19850021381}
}