@misc{indiciaef1e3bff2c46d,
  title = {A methodology for hypersonic transport technology planning},
  author = {Repic, E. M. and Olson, G. A. and Milliken, R. J.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730023221},
  note = {Source identifier: 19730023221}
}