@misc{indiciae437550bbe325,
  title = {Modulation inducing retrodirective optical system technical report, 21 may 1963 - 20 may 1964},
  author = {Harned, B.},
  year = {1964},
  url = {https://ntrs.nasa.gov/citations/19650010263},
  note = {Source identifier: 19650010263}
}