@misc{indiciaece623f772d5f,
  title = {Estimating trajectory correction requirements for multiple outer planet missions.},
  author = {Friedman, L. D. and Hamilton, T. W. and Stanton, R. H.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730032403},
  note = {Source identifier: 19730032403}
}