@misc{indiciae8bc9105ec88d,
  title = {User's guide to four-body and three-body trajectory optimization programs},
  author = {Pu, C. L. and Edelbaum, T. N.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19750003948},
  note = {Source identifier: 19750003948}
}