@misc{indiciae6279aeecf84b,
  title = {Sonic levitation apparatus},
  author = {Dunn, S. A. and Pomplum, A. R. and Paquette, E. G. and Ethridge, E. C. and Johnson, J. L.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19840020499},
  note = {Source identifier: 19840020499}
}