@misc{indiciae3ea4acef6027,
  title = {Multiple shutters for a stereoscopic camera},
  author = {Marxer, L. W. and Perkins, D. B. and Riker, J. G. and Sampey, H. R.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710000064},
  note = {Source identifier: 19710000064}
}