@misc{1167396,
  author = {C A Douglas},
  title = {Some problems in approach lighting:},
  year = {1958},
  month = {1958-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.5753},
  language = {en},
}