@misc{indiciae4ea6101e435e,
  title = {Optimal trajectories for hypersonic launch vehicles},
  author = {Ardema, Mark D. and Bowles, Jeffrey V. and Whittaker, Thomas},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930070566},
  note = {Source identifier: 19930070566}
}