@misc{indiciae50d8d9249f71,
  title = {Interactive Software For Astrodynamical Calculations},
  author = {Schlaifer, Ronald S. and Skinner, David L. and Roberts, Phillip H.},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19950065189},
  note = {Source identifier: 19950065189}
}