@misc{indiciae5ab2b1d4734f,
  title = {Invertibility of linear time-invariant dynamical systems.},
  author = {Massey, J. L. and Sain, M. K.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690059149},
  note = {Source identifier: 19690059149}
}