@misc{1161011,
  author = {Gerald L Howett},
  title = {Some psycho-physical tests of the conspicuities of emergency vehicle warning lights:},
  year = {1979},
  month = {1979-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.480-36},
  language = {en},
}