@misc{indiciaec0e52cf02a7f,
  title = {Automatic focus control for facsimile cameras},
  author = {Sinclair, A. R. and Burcher, E. E. and Katzberg, S. J.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19750006942},
  note = {Source identifier: 19750006942}
}