@misc{indiciae803e9075ac97,
  title = {The use of minimum order state observers in digital flight-control systems.},
  author = {Montgomery, R. C. and Hatch, H. G., Jr.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720061677},
  note = {Source identifier: 19720061677}
}