@misc{indiciaee5ec1c7cb7cf,
  title = {Identification of Linear Discrete Time Systems Using the Instrumental Variable Method.},
  author = {Polak, E. and Wong, K. Y.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19680045929},
  note = {Source identifier: 19680045929}
}