@misc{indiciae13808920d046,
  title = {Advanced launch vehicle computer programs for vertical takeoff trajectories, horizontal takeoff trajectories, and horizontal takeoff trajectories with sonic boom calculation, supplement},
  author = {Conrad, D. P.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690011657},
  note = {Source identifier: 19690011657}
}