@misc{1164451,
  author = {Robert T Vaughan},
  title = {Testing of coded heliport beacons:},
  year = {1966},
  month = {1966-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.9440},
  language = {en},
}