@misc{1161116,
  author = {Gerald L Howett and Kenneth L Kelly and E Thomas Pierce},
  title = {Emergency vehicle warning lights ::state of the art},
  year = {1978},
  month = {1978-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.480-16},
  language = {en},
}