@misc{indiciae4255d61e0e6a,
  title = {GROUND VERSUS ON-BOARD TRACKING FOR SPACE NAVIGATION},
  author = {Kurtz, H. F. and Speer, F. A.},
  year = {1962},
  url = {https://ntrs.nasa.gov/citations/19630006126},
  note = {Source identifier: 19630006126}
}