@misc{indiciaede8ed15b7156,
  title = {Thrusting trajectory minimization program for orbital transfer maneuvers},
  author = {Green, R. N. and Hoffman, L. H. and Young, G. R.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710018613},
  note = {Source identifier: 19710018613}
}