@misc{indiciaeb6114b6002da,
  title = {A note on Kalman Filter.},
  author = {C R Rao},
  year = {2001},
  doi = {10.1073/pnas.191354498},
  url = {https://pubmed.ncbi.nlm.nih.gov/11553805/},
  note = {Source identifier: 11553805}
}