@misc{indiciae357087de680a,
  title = {Alignment Cube with One Diffractive Face},
  author = {Ohl, Raymond G. and Sampler, Henry P. and Strojny, Carl R. and Hagopian, John G. and McMann, Joseph C.},
  year = {2006},
  url = {https://ntrs.nasa.gov/citations/20110013618},
  note = {Source identifier: 20110013618}
}