@misc{indiciae326deaf6b21e,
  title = {Transmitting and reflecting diffuser},
  author = {Keafer, L. S., Jr. and Burcher, E. E. and Kopia, L. P.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780007936},
  note = {Source identifier: 19780007936}
}