@misc{indiciae8099c7dd86c4,
  title = {Position determination of spacecraft at Mars using earth-based differential tracking},
  author = {Kahn, Robert D. and Folkner, William M. and Edwards, Charles D. and Vijayaraghavan, A.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920060716},
  note = {Source identifier: 19920060716}
}