@misc{indiciaea6bb26c2cc90,
  title = {Key technology for airbreathing hypersonic aircraft.},
  author = {Nagel, A. L. and Becker, J. V.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730032829},
  note = {Source identifier: 19730032829}
}