@misc{indiciae652f16bd0898,
  title = {Optimal trajectories for hypersonic launch vehicles},
  author = {Ardema, Mark D. and Bowles, Jeffrey V. and Whittaker, Thomas},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19950053285},
  note = {Source identifier: 19950053285}
}