@misc{indiciaed6537880dd42,
  title = {Scramjet testing from Mach 4 to 20 - Present capability and needs for the nineties},
  author = {Thomas, Scott R. and Guy, R. Wayne},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900051430},
  note = {Source identifier: 19900051430}
}