@misc{indiciaea9d84b7dc56c,
  title = {Trajectory optimization by a direct descent process.},
  author = {Fogarty, L. E. and Howe, R. M.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690039581},
  note = {Source identifier: 19690039581}
}