@misc{indiciae22c9eaec60d6,
  title = {Active optical system for spaceborne telescopes Final report},
  author = {Arnold, R. A. and Crane, R. and Fowski, R. J. and Gaal, E. C. and Liu, R. C. and Pillsbury, D. L. and Robertson, H. J. and Sprague, R. A. and Thompson, D. T.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19670009639},
  note = {Source identifier: 19670009639}
}