@misc{indiciae9d546f4c5b81,
  title = {An Empirical State Error Covariance Matrix for the Weighted Least Squares Estimation Method},
  author = {Joseph Henry Frisbee},
  year = {2014},
  url = {https://ntrs.nasa.gov/citations/20140011726},
  note = {Source identifier: 20140011726}
}