@misc{indiciaebc0c89a904ac,
  title = {Linear Covariance Analysis and Epoch State Estimators},
  author = {Markley, F. Landis and Carpenter, J. Russell},
  year = {2012},
  url = {https://ntrs.nasa.gov/citations/20120013105},
  note = {Source identifier: 20120013105}
}