@misc{indiciaee8b7a794e91c,
  title = {Tracking systems, their mathematical models and their errors. Part II - Least squares treatment},
  author = {Kahn, W. D. and Vonbun, F. O.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19670003846},
  note = {Source identifier: 19670003846}
}