@misc{indiciae45c6e720fa47,
  title = {A versatile Kalman technique for aircraft or missile state estimation and error analysis using radar tracking data.},
  author = {Aldrich, G. T. and Krabill, W. B.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720055423},
  note = {Source identifier: 19720055423}
}