@misc{1187046,
  author = {H J Kostkowski},
  title = {The National Measurement System for radiometry and photometry:},
  year = {1977},
  month = {1977-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.75-939},
  language = {en},
}