@misc{1158071,
  author = {Kenneth L Eckerle},
  title = {Photometry and colorimetry of retroreflection ::State-of-measurement-accuracy report},
  year = {1980},
  month = {1980-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.TN.1125},
  language = {en},
}