@misc{indiciae9648a54da59b,
  title = {An approach to the linear multivariable servomechanism problem.},
  author = {Young, P. C. and Willems, J. C.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720049135},
  note = {Source identifier: 19720049135}
}