@misc{indiciaed9acf483f0c5,
  title = {Apparatus and method for aerodynamic levitation},
  author = {Williamson, John W. and al-Darwish, Mohamad M. and Cashen, Grant E.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/20080004279},
  note = {Source identifier: 20080004279}
}