@misc{indiciae2b98177717c9,
  title = {Trajectory optimization for a National Launch System vehicle},
  author = {Chen, Eugene S. and Boelitz, Frederick W. and Sullivan, Jeanne M.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930067317},
  note = {Source identifier: 19930067317}
}