@misc{indiciaed5a541f75798,
  title = {Stable Kalman filters for processing clock measurement data},
  author = {Clements, P. A. and Gibbs, B. P. and Vandergraft, J. S.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900003485},
  note = {Source identifier: 19900003485}
}