@misc{indiciae8b91a480db7c,
  title = {System identification: A question of uniqueness, revisited},
  author = {Hardee, J. E. and Matzen, V. C.},
  year = {1982},
  url = {https://ntrs.nasa.gov/citations/19820025887},
  note = {Source identifier: 19820025887}
}