@misc{indiciae9e174925fdda,
  title = {A users manual for a computer program which calculates time optical geocentric transfers using solar or nuclear electric and high thrust propulsion},
  author = {Sackett, L. L. and Edelbaum, T. N. and Malchow, H. L.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740022171},
  note = {Source identifier: 19740022171}
}