@misc{indiciaed49bf5d83ba7,
  title = {Assigning controllability and observability Gramians in feedback control},
  author = {Yasuda, Kazunori and Skelton, Robert E.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910067388},
  note = {Source identifier: 19910067388}
}