@misc{indiciaef500f068c95e,
  title = {A Self-Tuning Kalman Filter for Autonomous Navigation using the Global Positioning System (GPS)},
  author = {Truong, S. H.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/19990064172},
  note = {Source identifier: 19990064172}
}