@misc{indiciae0931c0ea3fd8,
  title = {Joint USAF/NASA hypersonic research aircraft study},
  author = {F. S. Kirkham and R. A. Jones and M. L. Buck and W. P. Zima},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750055459},
  note = {Source identifier: 19750055459}
}