@misc{indiciae8ef1fdbd5b72,
  title = {Use of aircraft for zero-gravity environment},
  author = {Enders, J. H. and Haise, F. W., Jr. and Useller, J. W.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660014262},
  note = {Source identifier: 19660014262}
}