@misc{indiciae4331ed4c1d12,
  title = {Two improved coherent optical feedback systems for optical information processing},
  author = {Lee, S. H. and Bartholomew, B. and Cederquist, J.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19770041881},
  note = {Source identifier: 19770041881}
}