@misc{indiciaefd06020187ff,
  title = {SeGRAm - A practical and versatile tool for spacecraft trajectory optimization},
  author = {Rishikof, Brian H. and Mccormick, Bernell R. and Pritchard, Robert E. and Sponaugle, Steven J.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19920032129},
  note = {Source identifier: 19920032129}
}