@misc{indiciae2684f71b3afc,
  title = {Schlieren photographs from holograms.},
  author = {Ballard, G. S. and Gibbons, R. H. and Story, J. B.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660051802},
  note = {Source identifier: 19660051802}
}