@misc{indiciae2abf0d920b67,
  title = {Automatic focus control for facsimile camera},
  author = {Sinclair, A. R. and Katzberg, S. J. and Burcher, E. E.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730000361},
  note = {Source identifier: 19730000361}
}