@misc{indiciaefbac7e08e7ca,
  title = {Invariants of optimal minimal-order observer-based compensators},
  author = {Blanvillain, P. J. and Johnson, T. L.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19780058079},
  note = {Source identifier: 19780058079}
}