@misc{indiciae55ed8babe8df,
  title = {Earth-based navigation capabilities for outer planet missions.},
  author = {Hildebrand, C. E. and Ondrasik, V. J. and Ransford, G. A.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720061764},
  note = {Source identifier: 19720061764}
}