@misc{indiciaef22dc598edec,
  title = {Sequential filter design for precision orbit determination and physical constant refinement},
  author = {Curkendall, D. W. and Leondes, C. T.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740036198},
  note = {Source identifier: 19740036198}
}