@misc{indiciae9200818ddb8c,
  title = {Discrete control of linear distributed systems with application to the deformable primary mirror of a large orbiting telescope},
  author = {Jeremiah F Creedon},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700021221},
  note = {Source identifier: 19700021221}
}