@misc{indiciaed25ef4eda69f,
  title = {Acoustic Levitation System},
  author = {Gammell, P. M. and Wang, T. G. and Croonquist, A. and Lee, M. C.},
  year = {1985},
  url = {https://ntrs.nasa.gov/citations/19840000406},
  note = {Source identifier: 19840000406}
}